Ass Play for Siblings

Xarth©

Author's Note: Possibly unnecessary warning, this story contains a lot of butt stuff. Use your own discretion.

Thanks to LizHaze for proofreading.

****

Part One: Something New

****

I stood up from my computer and stretched. It was getting late, pretty well time for bed.

I padded on bare feet out of my room and down the hall in just my sleep shirt and panties. The bathroom was past my brother's room, but I didn't intend on stopping in to say goodnight. He had his girlfriend over, and it would be rude to interrupt if they were up to anything.

It was kind of weird for a brother and sister to still be living together in our twenties. I wasn't oblivious to that. All the other siblings I knew had split up and gone their own ways after moving out of their parents' homes. It was different with Logan and me.

In my mind, there'd never been any question of us not living together. It just hadn't occurred to me. Logan probably would have been happy enough doing the usual thing and going off on his own, but I was pretty sure he was happier staying with me. We were cozy, codependent little sibbos like that.

Moans of pleasure filtered down the hall as I approached Logan's room. Yeah. He was definitely getting some. Good for him.

Even better, as I discovered shortly after, Logan had left his door cracked open. I grinned and glided forward like a ninja to take a peek without disturbing anything.

I couldn't see much of the action through my sliver of exhibitionist light, but there was no mistaking the action inside the room for anything other than fun sexy times.

Erin, Logan's girlfriend, was naked and on all fours on his bed. My brother, equally naked, was behind her, hands on her hips, cock presumably buried in her. He was rocking against her, engaged in gentle thrusting. Maybe they'd just started or something and he was getting her warmed up. Or maybe that was all Erin could handle. Hard to say.

Erin shifted her position, leaning farther forward to bury her face in a pillow. Her moaning became muffled and, more importantly to me, she wasn't able to see much of anything.

I took my opportunity to carefully push the door a little wider open. Logan caught the movement, as I'd assumed he would. He turned his head toward me and grinned. I smiled back and flashed a thumb's up sign.

What the hell, gentle sex or no, Erin was pretty hot. He'd done ok for himself.

Logan's attention was already back on his girlfriend, as well it should be. I decided to watch another minute or two, then leave them be.

It was kind of fucked to enjoy watching my big brother having sex. That, too, was known to me. It had just never seemed like much of a big deal to me, and Logan had never minded. Actually, I was pretty sure he liked being able to show off for someone. 'Ooh, look at the girl I'm banging, hot right?' kinda thing.

I slipped a hand under my shirt and ran a finger over the front of my panties. Starting to dampen. Probably time to get moving then. I didn't want Erin to catch me standing there masturbating like a total perv.

Then I realized what I was actually watching.

Logan grabbed Erin's ass cheeks and, possibly for my benefit, spread them wider. My eyes bugged and I stifled a gasp. He wasn't in her pussy at all.

A few little things clicked in my head once it became clear they were doing butt stuff. Of course he was being gentle, he'd have to be. And Erin's slightly awkward position was to facilitate entry into an entirely different hole than what I'd expected. Goddamn.

Despite firmly wanting to control my masturbatory urges, I couldn't help fingering myself a little. Just over my panties, nothing excessive, just enough to take the edge off.

Logan was butt-fucking his girlfriend right in front of me. No wonder he looked so self-satisfied. He looked that way during and after sex anyway, but his smugness was even more pronounced this time.

His idea or hers, I wondered. She certainly seemed to be enjoying herself as much as he was.

I'd never much liked the idea of putting things up my butt. Nor, indeed, had I met anyone else who openly enjoyed it. I'd seen such things on the internet, of course. It was far from the grossest fetish I'd explored online out of curiousity or horniness.

Real life was something else entirely. Logan and Erin weren't just some naked actors on my computer screen, they were people I knew. And they were actually there, right in front of me. I could have run in and touched them.

My fingers slipped beneath my panties. I was getting so goddamn wet down there. I bit my lip and fingered myself a little while longer, then reluctantly straightened up and eased the door closed again.

Well fuck. All I wanted to do was go to bed, and now I was a horny mess. Thanks, Logan.

I got ready for bed and returned to my room. I had to fight the urge to back and perv on Logan and Erin some more.

I stripped fully naked in my room before making a selection from my 'toy box'. Some play time was going to be essential if I wanted to get to sleep.

I opted for my favourite purple dildo and decided against bringing my bottle of lube along. There was no need for it. My little pussy was already drenched.

Alone in my room, door closed, lights off. Perfect. I snuggled comfortably on my back and closed my eyes.

The scene of anal debauchery was still fresh on my lids. Logan grinding on Erin's ass, the delirious moans they made, that thrill of illicit discovery when I'd realized what hole my brother was using...

With slow, delicious anticipation, I pressed my dildo to my pussy. It entered smoothly, filling me up nicely until I was completely stuffed. It was my favourite toy for the very reason of just how perfectly it matched my vagina, and how beautifully it satisfied my occasional need to be thoroughly penetrated.

I thrust my dildo lazily in and out, gradually increasing the length of the back and forth motions. Flashes of mental sexiness accompanied my self-pleasure, greatly enhancing my masturbation.

My free hand trailed down beneath my dripping pussy. Some juices had already streamed over my butthole. I swirled a finger over the tight entrance, massaging in some natural lubrication.

Could I ever do butt stuff? I mean, of course I could, if I wanted. It was all a question of whether I did, in fact, want. An hour earlier I would have laughed and given a firm 'no'. Anal was for porn stars and cam girls, not for li'l ol' me.

But Erin had been enjoying herself. And Logan too. Not that either of their opinions had anything to do with me, but still.

For some reason, an image entered my mind of my brother peeking in my room at me getting fucked in the butt. My pussy clenched involuntarily, briefly halting my dildo's rhythm.

What was that even about? Was it really that hot imagining my brother watching me get ass-fucked?

My tummy gave a flutter as I jammed my dildo back inside me. Yes. Yes it was that hot. For some reason, I really, really liked the thought of him seeing me be a little butt slut. Probably it was just the novelty and naughtiness of it all. Probably.

I moaned aloud and arched my back as I kept playing with myself and allowing my fantasy to get deeper and dirtier. Occasionally my mind-movie went so far as to cast Logan as my anal lover. I felt a tiny bit ashamed of those visions, but they were also the hottest.

Me on my knees, face buried in a pillow just like Erin. Ass stuck up in invitation. Logan behind me, maybe smacking my butt a few times. Then him inside me. Inside my ass.

Getting fucked in the ass by my brother. Goddamn.

I came without so much as touching my clit. Usually it took some clit-play to get me there. Not tonight.

I kept fucking myself through my orgasm, and I was pretty sure I whispered my brother's name a few times. I slowed down in synch with the diminishing of aftershocks, then eventually pulled out my dildo. It was so slick. I sucked on it a bit just for the hell of it. I liked the way I tasted, but only when I was in the right mood.

Shortly thereafter I pulled my blankets up and went to sleep.

****

The house was quiet the next morning. I crept by Logan's room in my sleep shirt, knowing there wouldn't be more sexy times to spy on, but somehow hoping there would be anyway. It was silent from within so I moved on.

I poured two bowls of cereal in the kitchen. I carried them into the living room, then grabbed the milk out of the fridge and poured some in my bowl. I left the milk on the end table on Logan's side of our awesome, comfy couch, along with his bowl of cereal.

Since I was first up today, I got to pick what to watch. I loaded up the series I'd been muddling through on Netflix and curled up with my breakfast.

Logan awoke not too long after. I heard him run the shower and flush the toilet, then eventually make his way to me.

"Morning," I said.

"Morning, Kelse." He poured his milk, then sat down beside me. "How'd you sleep."

"Fine thanks. Not as good as you, I imagine."

"Ha, yeah."

I didn't look at Logan. I knew he was smiling like an idiot. "She liked it in the butt, huh?"

"Yep. And seriously, she has a great ass."

"Looked like it."

We ate in silence for a bit. Me moreso than Logan. He'd always been a faster, slightly messier eater.

"I never really wanted to do anal," I said.

"That's fine. It's not for everyone."

I frowned at my brother. "Hush a second. What I'm saying is I never used to. But, like, I'm thinking about it now."

Logan raised an eyebrow. He wiped his mouth with the back of his wrist and set down his empty cereal bowl. "Oh?"

"Yeah. I mean, maybe. I dunno."

"What don't you know?"

"Like... it was super fucking hot last night, right?"

"Sure."

"You and Erin... goddamn."

"Got you all horny, huh?"

"Kinda."

"Well just make sure you use plenty of lube if you try it. You don't want to fuck around and skimp out."

"Uh... yeah. Sure. Thanks." I waited a moment, but apparently all I was getting from my brother was 'use plenty of lube.' I was reasonably confident I could have handled that one on my own. "I don't know if I'm gonna try it or anything. Just thinking about it."

"Sure, sure."

Again, not as much input as I was hoping for. "You're not being very helpful."

"Me? What did I do? I'm being supportive, aren't I?"

"You... you... just... nevermind."

I knew I was being too cryptic for Logan. He was a boy, and therefore tended to need big neon signs for hints if he was expected to get it. I just wanted some actual discussion, was all. Some real input on what anal was like, and whether I should spend time considering it.

Actually, that wasn't quite true. I was pretty sure I had to try it, if only just so I'd know for sure. What I really wanted was Logan to convince me to do it. If I couldn't figure myself out, it probably wasn't fair to expect him to be able to do so.

Well, if I couldn't depend on him to sort out my decisions for me, there were still some things I knew he was good at.

"Hey, Gun?"

"Yeah?"

"I don't have any panties on."

I felt Logan eyeing me up and down, that slow, lecherous smile tweaking his lips. I glanced at him and confirmed that he had exactly the expression I expected. My pussy gave a happy little tingle in anticipation.

Logan scooted closer until our hips were touching. I spread my thighs a bit farther apart. I stared straight ahead at the tv and took another deliberate bite of cereal. It was more fun when I pretended to be ignoring him. It made it naughtier and sexier somehow.

His hand slid warmly up the inside of my thigh and under my shirt. My body shivered, and I clenched my fingers tight around my spoon to try and help control it. As soon as he touched my pussy, I knew I couldn't help myself this morning and set the remainder of my breakfast aside before I spilled it.

I snuck a peek at Logan, he was staring straight ahead, not even glancing at me. I grinned and went back to doing the same. It had been something of an in-joke between us ever since we started playing around this way. We used to think that as long as we weren't looking, weren't acknowledging, then it wasn't really that bad. We'd grown out of that a bit, but not by much.

I bit my lip and leaned back even more. Logan's fingers ran up and down my pussy, and they were doing particularly luscious things to me this morning. Maybe I was still worked up from the night before. Maybe I still had overly naughty thoughts consuming me. Whatever it was, I loved it.

Logan knew what I liked. He had years of practice. He knew exactly how to tease me, how to toy with my clit, when to slip a couple fingers inside. He could make me squirm and wriggle with a few judicious twitches of his fingers.

I sat there and got played with by my brother just the way I loved it. He brought me closer and closer until my hips were rocking on their own, desperate for just that little bit more. He could draw me out indefinitely, and some days that's exactly what we did. Cold winter days were the best when we spent hours cuddled up together, one of us on the brink of orgasm until we just couldn't stand it any longer.

My silence broke as I came. I few small moans and whines passed my lips despite my efforts to hold them in. Erin was still in the house, after all. I couldn't exactly scream my pleasure to the heavens without alerting her that something was going on.

Logan pulled his hand out and sucked his fingers clean. I smiled lazily, then leaned over to kiss his chastely on the cheek.

"Thanks, bro."

"No problem." He ruffled my hair. "Anyway, I probably gotta get going."

"Yeah, sure. You taking Erin with you?"

"Not sure. Do you mind if she wants to sleep a little longer?"

"Nah. We've got along ok the couple times we've talked. I can play hostess for a bit." I smoothed down my hair. "I'll have to kick her out when I head to work, though. I don't trust her here alone yet."

"Fair enough."

I watched Logan leave the room. If he hadn't gotten laid last night, I knew he would have been after me for a quick handjob before he left. I was totally in the mood for it too. Oh well. I'd had my fun. Mustn't get greedy.

****

I took a shower after Logan left. My horniness had been sated, so I wasn't in there long enough for play time with the showerhead. I did have a few thoughts of my brother sneaking in and... well, I wasn't quite sure what he'd do. I had to get him off my mind somehow. Even for us, my mind was going way too dirty.

After getting all nice and clean, I toweled myself dry and hung my towel up. I stepped out into the hallway totally naked and carefree. I immediately bumped into Erin.

We both froze for a second, then I shrugged and giggled.

"Oh, sorry," I said. "I kinda forgot you were still here."

Erin smiled back. I noted that her eyes flicked up and down my body. Fair enough. I was completely naked, after all.

"Don't mind me," she said. "But I would have thought you'd be too worried about Logan seeing you to walk around like that. My brother's a straight up perv-ball. I used to have to watch myself around him."

Mine too, but she didn't need to know that. "Nah, I knew he was gone," I said with an airy wave of my hand. It was true, if also a deflection. "I wouldn't be so careless if he was still hanging around." That was a total lie.

"No, I suppose you wouldn't." She gestured to the bathroom behind me. "Anyway, you mind if I..."

I stepped aside. "No, please. Go ahead. There should be a clean towel or two in the cupboard."

"Thanks." Erin gave another quick glance at my lower areas as she passed. My body was starting to flush from being checked out like that. I kinda liked it. "I'll try to be quick," she said.

"No worries. Just as long as you're ready to go by the time I am. Gun probably mentioned that, right?"

"Sure." She cracked a wry smile. "I get not wanting to leave a strange girl alone in your house." Then she bit her lip. "Can I ask you something though?"

"What's up?"

"I've heard you call your brother 'Gun' a couple times. What's that about?"

I shrugged. "What else do you do for a nickname? Log? Logey?"

Erin considered, then nodded. "Fair enough."

I nodded back, then turned and walked away. It was several seconds before I heard the door close behind me. She was totally checking out my butt. Totally.

****

Delicious smells greeted me upon returning from work that evening. I inhaled deeply as I kicked off my shoes, then followed my nose to the kitchen.

Logan was busy at the stove. I snuck up behind him and wrapped my arms around his waist.

"Hey, you," I said.

"Hey, Kelse. How was work?"

"Fine. You?"

"Also fine."

"Good enough. What ya making me?"

"Just chili. Nothing special."

"'Nothing special?' Au contraire. I love it when you get all domestic and shit."

I gave him a loving smack on the butt before sauntering over to the fridge and getting myself some juice. Logan had turned around to watch me by the time I looked his way again.

"It's a good thing you're easy to please," he said. "Because you know damn well my cooking skills don't extend much beyond the basics."

"I do. But as long as you're cooking for me, that's all that's important, really." I paused and frowned slightly. "Or are you cooking for Erin?"

"Jealous, li'l sis?"

"Maybe a little."

Logan laughed. "Don't worry. She's not coming over tonight. It's a little early in the relationship for spending every night together."

"Plus it probably doesn't hurt to give her butt a rest," I pointed out. "If you wanna make that a regular thing."

"How pragmatic of you."

"Gotta think about these things, Gun. I'm telling ya."

Logan went back to work on our supper. I sipped at my juice and lost myself in thought.

My thoughts were mostly dirty. I could be a horny little thing at times, but ever since last night it had been especially bad. I'd caught myself daydreaming several times at work, and now that I was in close proximity to my brother it was even worse.

"Erin saw me naked," I said.

I smiled at the way Logan froze and slowly turned around. "She what?"

"Saw me naked," I repeated patiently.

The wheels were turning in his head. He was trying to figure out why she would possibly have been around me with my clothes off.

"Why, exactly?"

"I got out of the shower and forgot she was still here. We had a nice chat. She totally checked me out, too."

That got his attention even more that before. Like many guys, Logan was very interested in the 'lesbian playtime for male benefit' genre of reality.

"Did she really?" he said.

"Sure did."

"And what else happened?"

I tried to hide a smirk behind my cup. "Well, you know us girls. She had to take her top off so we could compare our boobies. Then we rubbed our tits together a bit. Then-"

"Goddammit, Kelse."

"What?"

"That didn't happen."

"No, it didn't. But you like imagining that it did." I could see the slight bulge in his pants and he knew it.

"Maybe I do."

"You definitely do. So anyway, we're both topless and a little turned on-"

"I thought you were naked?"

"Oh yeah. Right. So I'm naked and she's topless..."

I prattled on a bit. Logan rolled his eyes and went back to his cookery. I knew he was still listening because of how he kept fidgeting and tugging at his pants. Big bro was getting all horny, just the way I wanted him.

Once I'd teased him enough, I sidled closer.

"So," I said.

Logan didn't say anything. Probably still pretending to ignore me.

"Feel like playing a bit?" I asked.

"That's not a great idea right now."

I frowned. "Why not?"

Logan chuckled. "You are horny today, aren't you?"

"Kinda, yeah. Aren't you?"

"I'm a boy. I'm always horny."

"Right. So what's the problem?"

Logan turned and raised his hands. "I've got onion and spices all over my fingers."

I jumped back and slapped a hand protectively over my pussy. "Bad brother! No touching my vagina with those hands!"

"I think you'll find-"

"Bad!"

"-that's exactly what I'm trying to say."

"Hmph. Fine then. I'll just go play by myself."

"You mean with yourself."

"That too."

I flounced off to go masturbate. Logan and his stupid hands would just have to stay back and miss all the fun.

****

Part Two: Secrets Revealed

****

My intermingled obsessions with sex, butt play, and my brother ass-fucking Erin all kind of faded away a bit over the next few days. They were still there, but much more manageable.

I still got a little tingly the next time Logan said he might be bringing Erin over. It felt like forever since the last time, though in truth it had been less than a week.

I heard the two of them get home late that night. They were stumbly, and giggly, and doing that particularly loud sort of sneaking that drunk people do when they're trying very hard not to wake someone.

Well that was interesting.

Logan didn't get super-drunk very often. Maybe a handful of times that I knew of. I wondered if they were even going to fuck. I really hoped they weren't both going to get sick and start throwing up everywhere and whining for me to take care of them.

I waited in my room until I was pretty sure they were settled in. I didn't want to meet them in the hall just in case.

There was still muted giggling coming from Logan's room as I slunk toward it. There was something else too. Sex sounds, I thought. But something not quite right about them. Something I couldn't quite place.

His door was wide open. That wasn't right. I made each footstep slow and silent as I neared my vantage point. I had to know what was happening.

My gasp sounded loud enough in my ears that I would have totally failed ninja school. I hadn't been prepared at all. Logan butt-fucking Erin last time had been unexpected. The reverse was something else entirely.

Somehow, in their drunken, horny, bumbling states, Logan and Erin had taken their relationship to an even kinkier level. My brother had taken Erin's position from last time; on his knees, face down, ass up. She was behind him wearing a strapon and, from the look of things, slowly working her way into his butt.

And they just kept giggling. Every time she moved, or he lost his balance, or even for no reason at all. They were thoroughly enjoying themselves, it seemed.

It didn't seem right. It was so fucked up. Something even more out of an internet video than regular anal. Something I couldn't believe Logan would actually be into. But there he was; laughing, getting penetrated, loving it.

And there I was, watching.

Goddamn but I couldn't stop watching. I couldn't have explained why, but I was entirely enthralled.

That dildo attached to Erin's hips just kept disappearing in my brother's ass. The further it went, the more Erin thrust, the more entranced I became. My eyes were wide, my pussy aquiver. I was getting seriously turned on.

Logan let out a particularly loud groan as Erin buried her strapon to its deepest point yet. She pressed her finger to her lips.

"Shhh," she hissed. "You'll wake her."

Logan laughed. "Tol' you. She's gonna come wash. Watsssh. Watch."

"No she won't, you sicko." Erin giggled. "Yer sisser's not gon' watch."

They carried on like that. I wasn't sure what to make of their argument. It sounded an awful lot like Logan had told Erin about some of the stuff him and I got up to. That wasn't right. No one else was supposed to know.

And yet, there wasn't an ounce of irritation to be found in me. My beautiful, naked brother was getting drunkenly pegged by his hot, naked girlfriend. I was aroused beyond all reason.

I didn't have any panties on. That made it super convenient to stick my hand under my sleep shirt and start rubbing my pussy. My little slit was so wet already. Some of my juices were already escaping down my thighs.

How long had I been standing and staring? My sense of time eluded me. The show was just too fascinating.

Finally, in a move that would have won him his argument long ago, Logan looked up toward the doorway and spied me watching like a total perv, hand figuratively down my pants.

"Ha!" Logan said. "Tol' you."

Erin followed his gaze. "Oh shit, yer right."

Having been caught, I stepped forward out of my flimsy concealment. "Uh... hey."

Erin crooked a finger. "C'm'ere, Kelsey."

I padded another few steps closer. I surreptitiously wiped my soggy fingers on the back of my shirt.

"So, like..." I said. I didn't know where to go with the sentence and just let it trail off.

"Logan's been tellin' me s'me inneressing fings," Erin said.

"Has he, indeed?" I glanced at my brother, but he had his face buried in his pillow again.

"Ver' naughty fings."

"I see."

"'Bout you two."

"He shouldn't have done that."

"I diss'gree. I'm ver' happy he tol' me."

"You're drunk."

"True. He's m're talka... talk..." Erin paused a moment then enunciated carefully. "Talkative... when he's a li'l drunk. You know tha'??

"Seems that way, doesn't it." I sat on the bed and ran my fingers through Logan's hair. That sweet, stupid bastard. "Somehow, you don't seem too mad about it though."

"M'not, really. But..." Erin waved her hands like she thought she was communicating with them.

"You didn't believe him?" I guessed. "You wanted to know how much was true? And hell, you probably decided you wanted a little revenge if it was true."

"Ha! Yuss. Wazzn't 'venge though. Just fair. He let you wash me ge' fucked. He hassa do same."

I nodded. "This all makes a bizarre sort of sense. I'm not convinced you'll feel the same about it in the morning."

Erin shrugged. "We'll see."

She grabbed Logan's hips with both hands and gave a firm thrust into his ass. She'd been going slow and inconsistently while talking with me, and her sudden return to action got a series of low grunts from my brother.

I was trying to focus and process, but I was right next to them now and could see absolutely everything. Mostly I was just horny as fuck.

"Does he do th's a lo'?" Erin asked.

"Sorry? What?"

She pointed at where her attached dildo was sliding in and out of Logan's butthole. "This. Does he do a lot?"

"What, get butt-fucked? No. First time as far as I know."

"Huh. T'kin' it rea' well."

I nodded. He really was taking it well. "He's incoherently drunk. That might help."

"Migh'."

I sat there and played with Logan's hair. It was more than a little surreal. Realistically, one or all of us should have been freaking out for one reason or another. Instead, we were all just being horny little fucks.

Since I couldn't really make things any weirder, I gave in and resumed my earlier masturbation. The movement of hiking my shirt up past my waist and inserting a pair of fingers into my pussy attracted some attention. Logan's I didn't mind. Erin's, however, made me blush.

The way she stared at me was distracting and confusing. Part of it, I thought, was a dawning awareness of the kind of things Logan and I were comfortable with around each other. The way she bit her lip and watched me play suggested she was extremely ok with it.

Logan was lucid enough to recognize that his sister's pussy was bared for him. He may not have been totally aware of the consequences of acting on that knowledge. Erin had been totally up for it so far. I had no idea where her line was, or what would happen when he tried to bury his face in my vagina.

I fended off his first few attempts at getting between my legs. Erin seemed bemused, then shocked, then simply curious. She stopped fucking Logan and let him try to shift to a better position.

I shrugged and gave in. I swung a leg past my brother's head and splayed my wet cunt out for him. He dove in like an eager puppy that was finally allowed its treat.

"Wow," Erin said.

My face was still hot, but it was hard to stay embarrassed with my brother's tongue at work. "Yeah," I replied.

"You two're crazy." Erin started rocking her hips again.

"We don't do this a lot," I said defensively, as though somehow that made it better.

"You don'?"

I debated for a second, then went with the truth. What the hell. "Mostly just special occasions. Birthdays or Christmas or whatever. Or if one of us is having a bad day." I shivered as Logan flicked his tongue over my clit. "Mostly we just do hand stuff."

"Han' st'ff?"

"You know. Hand jobs. Fingering. Not, like, incesty or anything. Just messing around. Doing something nice for each other."

"Sounds pr'tty 'cesty to me."

I nodded in surrender. "Ok, that was a pretty weak excuse. I dunno. I'm just kinda hoping you don't judge us too bad when you sober up. I think Gun really likes you."

Erin giggled. "Well I like 'im too. An' you. You two're sexy."

"Thanks?"

She leaned forward to the point of almost losing her balance. She giggled some more, then took my shoulder and pulled me in for a kiss.

It was an unexpected gesture, though kind of nice. Her lips were soft even if they tasted strongly of rum.

"Ver' sexy," she said.

I shrugged. "Alright, what the hell." I pulled my shirt all the way off, leaving myself just as naked as Logan and Erin. Might as well fit in.

Erin smiled broadly. She kept pumping my brother, he kept licking me, I... well, I kinda just kept being there. And it was awesome.

Erin eventually took pity on Logan, not that he'd yet realized he needed it. She grabbed his cock from behind and jerked him off along with continuing to pound his ass. She held her other hand beneath his cock as he came and milked him into her palm.

I was absolutely delirious with arousal by then. Logan fell away from both me and Erin as he was spent. That was disappointing. However, Erin then offered me her cum-filled hand.

I looked at her. She quirked an eyebrow and stared right back. After a suitable moment of pretending like I didn't want to dive right in and lap up my brother's cum, I dove in and lapped up my brother's cum.

I couldn't believe I was cleaning Logan's cum off another girl's fingers. My pussy was on fire. I licked and sucked and got every little bit of him off her skin. Then, before swallowing the last of it, I launched myself at Erin and kissed her fiercely, giving her a taste of what I'd just consumed.

Some of my insane passion faded as we pulled apart. I was still horny as fuck, but I forced myself to take a deep breath and try to regain some control.

"I guess I should get going," I said.

"Why?" Erin asked.

"Well, for one, Gun seems to have fallen asleep on us."

Erin found that terribly amusing, but she still grabbed my arm as I tried to leave. "M'not r'dy to slep yet. Din't even cum or nuffin'."

"Oh. Well... what do you want me to do about that?" I held my breath, assuming she was about to suggest something naughty.

"Dunno," she said. "But at leas' le's get some water. M'thirsty."

I deflated somewhat, my insane guess proven wrong. Not that I wanted to fuck her, but horny little me had somehow hoped she wanted to. "That's probably a good idea. Try and bring down tomorrow's hangover while we're at it."

****

Erin and I stayed up a little while. Our quest for water ended up being more a midnight snack kind of deal. It had been a long time since supper, and sex had depleted us a bit.

Neither of us put any clothes on, though she at least removed her strapon. It was just us two naked girls sneaking around like teenagers in the night. I wasn't sure why we felt the need to be quiet and stealthy since Logan was the only other one home, and he slept the sleep of a drunk boy well fucked.

I was still horny and it felt kind of naughty pretending like we were doing something bad, so I went with.

"I still can't believe you let your brother eat you out like that," Erin said. She'd sobered up enough that her speech was basically comprehensible. "That's so crazy."

"I don't know why more girls don't," I countered. "I mean, friends with benefits are a thing. Logan's sorta like that, only more convenient, you know?"

"Oh my god. Yeah, right. Brother with benefits." Erin giggled. "So seriously though, I know you didn't want me to think you guys are freaks, but it's a little too late for that, so just be honest. You two fuck, right?"

I gasped in a mix of real and mock shock. "Of course not!"

"What do you mean 'of course not?' You mess around, you get him to lick you, you do... stuff. I don't understand how you wouldn't have fucked."

"You sound like you want us to. Now who's the freak?"

Erin grinned without shame. "Guilty. Maybe I'm still just horny from before, 'cause it's not really something I'm usually into. But I dunno, you and Logan... together..." She shivered. "The more I think about it, the more I see, the more it really works for me. Maybe it's just because I find you both super hot. Maybe it's not the sibling thing at all."

"Yeah, maybe." I paused and tilted my head. "You think I'm super hot too?"

"Well duh."

"So you're, like, into guys and girls?"

"Kinda. Mostly when I'm hella turned on. Usually guys, though. How 'bout you?"

I considered the question. I was mostly only ever into guys, but I wasn't averse to doing stuff with girls. Especially, like Erin said, when I was 'hella turned on.' For instance, I did find myself constantly drawn to staring at Erin's naked body. It was only fair. She kept checking out mine.

"Kinda the same, I guess."

She gave me a mischievous grin. "Well, we're both hella turned on right now, right?"

I hesitated only briefly before answering. "Sure?"

"So... you wanna mess around a bit?"

I laughed. "Oh my god. You're Gun's girl, and he's not even awake."

"So?"

"So... I don't know. It doesn't seem right."

Erin gave me a disbelieving look. "Kelsey, the stuff you and your brother do... I can't believe you're taking issue with this all of a sudden. I mean, you watched me the other night without me even knowing, right?"

I shrank back a bit. "Well-"

"Don't get me wrong, it's cute that you don't want to hurt your brother or whatever. But I seriously need to cum, and I feel like you owe me."

"You think so, do you?"

Erin got out of her seat and walked over to me. My chest got all fluttery as she neared. "I also think you probably want to play as much as I do."

"What, just because we're both naked and horny, and we definitely need to get off before we try to sleep, and we just did that thing with my brother, and..." I paused. "Yeah, you're right. Let's go fuck."

Erin squealed in delight and dragged me out of the kitchen. We giggled nervously all the way to my room.

I didn't know about her, but I'd never actually had sex with another girl. I told myself I was only going along with her because I was so worked up already, but it was more complicated than that, and I really didn't have it in me to work out all the nuances.

"Please tell me you have toys," she said as she visually scanned my room.

I beamed. "Do I ever."

Erin was dutifully impressed when I got out my collection. For the first time, I was kind of regretful not to have any anal toys. I'd never been interested before. Most everything else was well represented.

She cooed over the selection, and was several minutes making a decision. "I think I need something in my ass," she said.

"Oh? So the whole butt sex thing was your idea after all?"

"Only kinda. I have been getting into more lately. It's so deliciously naughty. And it feels great when you do it right." She made a face. "I avoided it for so long because of some bad experiences a while back."

"And now you're a butt slut?"

She actually blushed. "Well... I wouldn't go that far. But yeah, kinda." She shook her head. "Anyway, help me pick something out here, would you?"

And that's how I ended up helping my brother's girlfriend shove a dildo up her ass. Not the sort of activity I'd pictured, really.

It was pretty fun though. All new and novel, and kept me pretty worked up.

Lubing up Erin's ass involved her lying on my bed with her butt stuck up at me, then me rubbing and eventually fingering her butthole. She gave little moans of encouragement which initially confused me, but slowly I came to appreciate the sense of vicarious pleasure I got from playing with her butt.

I was actually kind of reluctant to start inserting the dildo. I liked the feeling of direct stimulation and control finger-banging her ass gave me. It was so warm and slippery inside, and her anal ring squeezed so delightfully around me. It gave me a much better appreciation for guys' views on anal, though I was certain it was a whole other level of awesome when using a penis.

The dildo went in about halfway pretty easily after all the warming up. I rocked it back and forth and made it fit the rest of the way until she'd swallowed almost the whole thing. She cooed happily at having her ass totally filled.

"Alright." I smacked her butt. "All done."

"Mmm. Fanks, Kelsey. That feels lovely." She wiggled her butt, then reached back to feel the little bit of dildo sticking out of her. "You know what I need now?"

"Couldn't begin to guess."

She rolled over, grinning madly. Her pussy was so wet it glistened. "A nice helpful tongue on my-"

"Nope."

"But-"

"I'm definitely not prepared to eat you out."

"Why not?"

"Well... partly because I don't think I quite like vaginas enough to want to lick one a bunch."

"But-"

"And partly because I feel like that would make this more than just messing around and getting off, which is all I want it to be."

Erin mulled that over. "You think Logan would be mad about that or something?"

"Hell no. He'd love it. Probably just be annoyed we didn't film it."

"Then why does it matter what we do?"

"I just told you. I'm only comfortable with messing around a bit. I don't want more than that. Me. My feelings. Not Gun's or anyone else's."

"Oh. But, like-"

"I know, you don't get it. You think I'm a total freak just 'cause I play around with my brother a bit, and it doesn't make any sense that I don't want to fall in bed with you."

"Well... kinda. I guess."

"Try not to think too hard about it. I think I've got something that'll distract you."

I felt Erin's gaze on my naughty bits as I bent to retrieve a toy that wasn't kept with the others. My Hitachi Wand was a bit more vibrator than I actually wanted most of the time. Tonight, it seemed ideal.

"Oh shit. Is that what I think it is?"

I grinned. "Sure is."

Erin spread her legs wantonly as I returned. She waited impatiently while I plugged the wand into the wall socket and positioned it.

"Come on," she whined. "I need it."

"Just hold on a sec. I'm going as fast as I can."

Her eyes lit up as I turned the toy on and its hum filled the quiet room. She couldn't take her gaze off it as I lowered it, aimed carefully, and let it come to rest on her pussy.

"Mmm." Her head and spine arched back. She lifted her hips to try and get even more contact. "That's amaaazing."

"Thought you might like it."

I tried to hold it still, but her hips were all a-wriggle, making my task next to impossible. That was fine. She was having fun. Perhaps a little too much fun, actually. The longer I watched, the more envious I became.

But what the hell. There was no reason I couldn't have that kind of fun too.

I crawled forward and overtop of Erin. I sat my pussy down right on top of hers, sandwiching the head of the vibrator between us. She was right. It was amazing.

It was just exactly what I needed. The vibrations were usually too much for me to properly enjoy, but this time I luxuriated in them. It was a night for sexual excesses.

It didn't take Erin long to get handsy with me as I rode her. She started feeling up my hips and ass, and when I didn't protest, she moved up my sides to my tits. Ordinarily that would have been a bit over the line for me, but not by that much really. It was still just playful fun, albeit a little more sapphic than I tended to run.

I let the moment consume me. Vibrations ran amok through my pussy and clit. Erin's wandering hands roamed my bare skin. And, admittedly, riding her hot, naked body was a turn on in its own right.

I came without doing anything at all but letting the moment happen. I wasn't entirely sure which of us was first, or indeed how many orgasms we went through. I stayed upright as long as I could, then collapsed sideways as my jelly-like legs gave out.

Erin kept moaning deliriously a while longer as I caught my breath. Finally she switched off the wand and lay panting beside me.

"Well," she said.

"Yup."

"That was... something."

"Uh huh."

"Are you sure you're not totally a closet lesbian?"

I chuckled. "Pretty sure."

"If you say so. I guess I'll go ahead and chalk that up as the greatest sex I've ever had with a straight girl."

We both burst out giggling. We were giddy, and tired, and sinking into post-orgasm sloth.

"That wasn't really sex," I said as I forced myself to sit up.

"No? Sure seemed like it to me. Obviously it wasn't traditional vanilla shit..."

"It was sex-like, I'll grant you." I scooted to the edge of the bed and tested my legs to make sure they'd hold me before I stood. "But it was still just messing around, right?"

Erin was quiet a moment. "You live by an odd set of rules, don't you?"

"Not rules, exactly. Just, like, I know who I am, right? I know who I want to be. Sometimes I don't know, sometimes I guess, sometimes I'm wrong. But, like, why should I have to conform to what other people tell me is right? Why can't I decide those sorts of things for myself?"

"So... you do lesbian shit, but only kinda. And you do incest shit, but only kinda. That's what you decided?"

I smiled tiredly. "Yeah, sure. You got it."

My annoyance and her trying to figure out my life story from our brief interactions must have come through in my tone. She called after me as I tried to slip out of the room.

"Wait, Kelsey, I'm sorry. I didn't mean to be all judgey and shit."

"It's fine."

"No but, like, it's cool that you do what you want. Come back, would you? I don't want to kick you out of your own bed."

I snorted. "You aren't kicking me out of anything. I'm coming back. I just have to deal with some stuff before I sleep. And I am well ready for sleep."

"Oh. Ok."

I walked away before she could say anything else.

I fetched a glass of water from the kitchen, then made my way to Logan's room. He was still sprawled dopily in his bed, naked butt sticking out like he wanted to be fucked some more. I felt a weird surge of sisterly love at the pathetic sight of him.

"Hey," I said. "Wake up."

It took a few prods before Logan stirred and blinked heavily at me. "Wha'? Wha's goin' on?"

"Drink this."

I handed him the water. He stared at it for a second, then downed the entire glass in a few seconds.

"Thanks," he said.

"What some more?"

"No. I think I'm good. Maybe. Just wanna sleep."

"I know. I'm sorry for waking you. Move your leg for a second."

I got my brother rearranged, then pulled his covers up around him. I tucked him in snugly, then kissed the side of his forehead.

"Kelse?"

"Yeah?"

"My ass hurts."

I smiled. "Yeah, I imagine it probably does."

"Did I..."

"Tell your girlfriend all about us, then let her peg you hard while I watched? Sure did."

"Oh. Oops?"

I ruffled his hair. "It's ok. It all worked out, more or less. We'll talk more tomorrow, ok?"

"Ok." He tucked his arm under his head. "Love you."

"Love you too, bro. Sleep tight."

I turned off the light and closed the door behind me. I padded nakedly back to my room where Erin was still waiting.

"So do we get to spoon now?" she asked.

"No, Erin, we do not get to spoon. We will sleep together because Gun needs his rest and I don't want to disturb him anymore."

"And because you kinda like the idea of-"

"Don't finish that sentence."

I flicked the light switch and crawled in next to Erin. Our bodies brushed together a few times as we got settled. It would have been all too easy to get horny again, if not for how dead tired I was. Her nude form held more than a little appeal, especially when so conveniently right beside mine.

I certainly wasn't as straight as I insisted I was, but we both knew that, and I figured the pretense made drawing my lines easier. And, too, gave some flexibility if and when she decided to push harder.

It really didn't surprise me when she eventually rolled toward me, nuzzled my shoulder, and draped an arm across my tummy. She might have thought she was getting away with something, and that was fine. It was a level of cuddling I was comfortable with.

"Night," I said.

"Mmm. G'night."

****

The next morning was an interesting affair. Erin was a bit sheepish upon waking up, though not as much as I'd expected. She seemed to recognize that she'd been a little too wild and pushed a little too much, but she also got a funny look in her eye every time she mentioned something from the night before like it was turning her on all over again.

"Anyway," she said, "that was fun. We should have another sleepover sometime."

"Actual sleepover, or naked sleepover?"

She grinned. "Naked, of course."

"Need I remind you you're Gun's girlfriend, not mine?"

"Yeah, yeah. Semantics."

I let her have the shower first. She hesitated a moment too long, and I was sure she was going to make a joke about us showering together. She thought better of it, if indeed that was her intent, and simply went ahead.

I slipped into some panties and a halter top, then went to check on my brother.

Logan was still gently snoring. I sat on the edge of his bed and watched his breathing. It didn't seem right to wake him, but he did have work to get to before too long.

Luckily he stirred before I had to make a tough decision.

"Morning, sleepy," I whispered.

"Hey, you."

"Feeling ok?"

"Head hurts. Ass hurts. Mouth's dry." He shrugged. "Other than that, fine as can be."

I patted his shoulder. "You'll be alright."

"Yeah. Eventually." He shifted a bit and groaned. "As long as I don't move too much."

"Poor baby. You want me to call in sick for you?"

He thought about it. "Maybe."

"And get you some water and aspirin?"

"Yes please."

"Ok. Sit tight. I'll take care of it."

I kissed him on the forehead, then left to take care of shit.

Erin was out of the shower when I came back from making the call to Logan's workplace. I didn't know what she thought was going to happen, but she hadn't put on any clothes, or even wrapped herself in a towel. She stood fully naked and scrubbed, hair still damp, lips quirked in a crooked smile like she thought I'd jump her on sight.

"Put some damn clothes on, would you?" I said in a light tone as a breezed by her into the bathroom.

"Is that all the reaction I get?" Erin pouted. "Here I am all naked and-"

"I know. I can see." I shook a pair of tablets from the bottle of aspirin, then slipped back past my brother's nude, pouty girlfriend. "I honestly would have thought you'd gotten enough action last night."

"Well, I did. But I keep thinking about it, and it's getting me kinda worked up again."

"Feel free to borrow my toys if you need one. Actually, while we're on the subject, I expect the one that was in your ass to be well cleaned before you go."

"Ouch. What happened to horny Kelsey? I liked her better."

"I imagine you did." I took Erin's cheek in one hand and softly kissed her on the opposite side. "We had fun. Don't make it more than it was."

"Yeah, you're right." She perked up. "Hey, maybe Logan-"

"Logan is resting," I said firmly. "You may talk or say goodbye or whatever, but no jumping in bed with him."

"What are you, his Mom?"

"When necessary."

We stared each other down for a moment, but she cracked well before I would have.

"You two are seriously adorable," she said. "Actually, I have to get going anyway. I should get back to my place and change."

"Probably sensible," I agreed.

"I have to go find my clothes in Logan's room. Is that ok... Mom?"

I rolled my eyes. "Yes, fine."

She smirked and slapped my butt on the way by. She knew she had my attention at that point, because the way her hips swung as she walked away could only have been for my benefit. Maybe a 'look at what you just passed on' kind of thing. Or maybe it was just her being horny and flirty. Who knew.

****

Logan was lazing on the couch playing video games when I got back from work that evening. I got settled, stripped down to my shirt and panties, then joined him on the sofa. I tucked my legs under me so I was half kneeling, half on my ass.

"Hey," he said. "How was work?"

"Fine, thanks. How 'bout you? Did you do anything today?"

"Not hardly, no."

"Lazy day?"

"Pretty much. I did put a casserole together for supper. It's in the oven."

"Mmm. Good boy."

I patted Logan's head. His hands never left his controller.

"Erin never came back to my room last night, did she?" he asked.

"Nope. She slept with me."

Logan's eyebrow quirked and a small grin graced his lips. He didn't say anything, but I knew exactly where his mind had gone. In this particular instance, he wasn't far off.

"You having fun picturing that?" I asked.

"You know I am. 'Cause I know how you like sleeping naked. And Erin..." He paused, both vocally and in his game. He slowly turned his head toward me. "She had to come get her clothes this morning."

"Uh huh."

"So she didn't have them last night."

"Right."

"Don't tell me... you guys didn't actually sleep naked together, did you?"

I grinned smugly. "Your girlfriend really, really likes me, bro. Maybe even better than she likes you."

"Oh my fuck." His eyes were wide, his mouth hung open. "You did too."

I shrugged. "Sure we did. Didn't want to disturb you."

He grinned. "And what else happened?"

"What makes you think anything else happened? It was perfectly innocent. We're just two girls sharing a bed. We might have naked-cuddled a bit, might have gotten a bit cozy... and just maybe I helped her shove a dildo up her butt, then shared a vibrator 'til we both came a bunch."

Logan's expression was well worth the pestering I knew the story would generate. He was so fun to tease sometimes.

Slowly, deliberately, he shut off his game. He set his controlled down like it was made of glass, then turned his whole body to face me.

"You did what, exactly?"

"You heard me."

"Yeah, but... you?"

"Me. And Erin."

"You fucked her ass with a dildo? That doesn't seem-"

"Ah! No no. I didn't fuck her ass. I helped her fill her ass, that's all. And we played with my wand a bit. And she might have felt me up a bunch and then cuddled afterward. But that's it."

I flicked my gaze to the crotch of Logan's pants. He was definitely hard.

"Please tell me you have pictures."

"You doofus. I absolutely do not have pictures."

"Aw."

"I told her that's all you'd be interested in."

"Heh. You know me pretty well."

"I do."

"So how was your night of lesbian romance?"

I rolled my eyes. "That is so not what it was."

"No? Kinda sounds like it."

"It was just messing around. That's all. Maybe it was a little lesbian-y, but only a little."

"Ah. Kinda like how we're only a little incest-y, yeah?"

I frowned. "You're making fun of me."

Logan shook his head. He put his hand on my bare thigh and squeezed reassuringly. "I'm not. Well, I am a bit. But I agree with you. You know that. It's just messing around."

"Right."

"Because if it got to be more than messing around..."

"It'd be bad," I finished for him. "Can you even imagine if we were more wrapped up in each other than we already are?"

"Hardly seems possible."

"At least we mostly function in society right now. I mean, people always think we're weird, and Erin actually found out why thanks to your big mouth, but they basically accept us."

Logan's hand ran up and down my thigh, rubbing softly. It felt nice.

"Plus it'd be kinda gross," he said. "Sleeping together, fucking, holding hands, kissing in public... all that couple shit. That's never who we were meant to be."

"Very true."

"But Kelse..."

"Yeah?"

"I do think about it sometimes. I don't want it, but I imagine it."

"Of course, Gun. So do I." I leaned in and kissed him on the forehead, then forced myself out of my seat. "I'm hungry. Is that casserole almost done?"

He smiled crookedly. "Let me check."

****

Part Three: In the Butt

****

I was, admittedly, kind of excited for the next time Erin spent the night. Probably not as much as Logan-who was actually fucking her-but still.

The dynamic had irreversibly changed between us. We all knew things about each other that most people never would. We also shared varying levels of open attraction for each other.

Erin and Logan had a stay-in date night. They ate pizza and cuddled their way through a romantic movie. Erin tried to get me to join them, but I retreated to my room and locked the door just in case. Intruding on my brother's date was definitely not an ok thing to do, despite neither of them minding at all.

Logan understood, though. He tried his best to keep Erin from pressuring me too much, even if he wasn't all that successful.

There were things you had to be careful of when you were brother and sister. You had to have things that were your own, lives that weren't totally, completely entangled. Erin was becoming entangled, and she shouldn't be. She was his girlfriend. His.

And yet...

They left the door wide open for me that night. I knew they would. I knew that if I was smart, I wouldn't go watch. I'd just leave them.

I wasn't that clever. Or maybe I just didn't have the self-control. I couldn't help myself.

Once again, in my shirt and panties, creeping to my brother's room when I should have been in bed. Happy, sexy sounds floating down the corridor to my perked up little ears.

They were fully naked. Logan was on his back, Erin on top riding him. It wasn't an urgent fuck; more of a gentle, sexual grinding. They got handsy at times, at others just relaxed into their slow rhythm.

Occasionally Erin would bend down and they'd share long, sensual kisses. I liked when they did that. Logan and I didn't kiss on the mouth. Mostly. That was a romantic-type thing to do, he said, and we weren't a romantic-type couple. Still, who could be good all the time?

I had my hand shoved down my panties when they finally caught me watching. For people who'd been expecting me, they hadn't kept much of an eye on the doorway.

Erin smiled and beckoned me closer. I shook my head and stayed right where I was. She frowned slightly and waved at me again. I didn't move.

Logan said something to Erin, but I couldn't make it out. They hissed a short, unintelligible conversation back and forth, then seemed to come to an agreement.

Erin rose off of my brother's cock. His shaft fairly glistened with her juices. I had an insane urge to run over and suck it clean. That was exactly the sort of desire that needed resisting from time to time.

The two of them changed positions. Erin got on her hands and knees while Logan got out of bed for something, then knelt behind her.

Lube. He'd gotten out of bed to grab lube, and now he was pouring some on Erin's ass.

My fingers sped up on my pussy. That was their game, was it? Give me an anal show, get me too horny to stick to my principles?

Well... it would probably work.

Erin stared straight at me while Logan fingered her ass. I saw the lust in her eyes, the way her lips twitched into little 'o's. She wanted to make me envious, and she was succeeding.

It could be me on the bed if I wanted. That was the insidious thing about me and Logan. We could do those sorts of things. There was nothing stopping us but us. I could take my clothes off, push Erin aside, present my ass...

No. Bad Kelsey. Stop that.

But I could.

Erin was offering low moans in tribute to her anal fingering. She was ready. Logan was ready too. His cock was massively hard, and I could see the look of barely contained eagerness on his face; especially pronounced when his erection bumped against Erin's butt.

I bit my lip as my brother guided his dick to Erin's rear hole. My pussy was totally flooded, and it was only getting worse.

An aura of relief spread through all three of us as Logan penetrated her. His magnificently erect shaft sank into her ass like they were made for each other. She mewled happily and arched her back, then braced her arms and pushed herself further toward him.

She liked it so much. It still amazed me just how easily Erin took my brother's cock up her butt, and how pleasurable she made it seem. That was the sort of thing that was meant to be confined to porn. Seeing her in real life-both of them really-was so much more visceral, so much more... tempting.

Yeah, tempting. Goddamn did I want to be Erin. Maybe I wouldn't like it, maybe it would hurt, maybe it'd be too gross or... or whatever. But I so badly wanted to try it. I wanted to feel what she felt. I needed to know.

Logan got a good rhythm going, and Erin was forced forward onto her elbows. She grabbed a pillow and hugged it beneath her, leaving her ass sticking lewdly up in the air.

Erin grinned at me, and again beckoned me closer. This time I didn't have the willpower to resist.

I stepped forward woodenly as I pulled my hand regretfully away from my pussy. I could see even better the nearer I approached. Logan's cock drilled deep into Erin's ass, and I watched in awe as it surfaced and sank in long thrusts.

"You like to watch, don't you?" Erin asked softly.

I bit my lip and nodded.

"Better than participating?"

"Sometimes."

"Because it keeps you separated?"

I considered the question. "Maybe."

Erin held out a hand and dragged me closer still. I sat down beside her. She ran a warm hand up my bare thigh.

"It's ok to want something even if you think you shouldn't have it," she said.

I snorted. "I know that." My gaze flicked to Logan. "Believe me, I know."

"I s'pose you do, don't you?"

Logan slapped Erin's ass, making her squeal. He grabbed her hips firmly and started fucking her harder. Her words were transformed into a series of happy moans.

Maybe he thought he was rescuing me from awkward questioning. He kind of was. But I was in a whole different place from worrying about that kind of thing.

"I want things lots of times," I said, as much to myself as either Erin or Logan. "Sometimes I let myself have them. Sometimes I don't." I pushed some of Erin's hair back from her forehead where it was starting to get sweaty. "It's not really about what I should or shouldn't do. It's about the consequences. What my life turns into."

I didn't think Erin was paying attention anymore. Logan was. He wasn't so far gone as her. His eyes met mine. An unspoken message flashed between us. A slight nod, no furrowing of his brow. He was ok with me being here. I suspected he would be, but it was good to be sure.

"The thing about watching," I said, "is it doesn't change anything. Not by itself. Not like doing. Doing things are how all changes happen. Usually small. Not always."

I pushed myself up on one knee, giving just enough balance to lean close to Logan. I kissed him, just quickly and softly, but it was a proper kiss. It felt right.

"Daaammmn," Erin moaned. "Do that again."

"No," I said simply. Kissing my brother wasn't something I was about to do just to satisfy someone's fetish. Even my own.

Erin was wriggling around under Logan's constant ass-fuckery. I scooted in front of her on my butt, the stole her pillow away from her. She might have protested if I hadn't immediately pulled my panties off and stuck my pussy in her face.

Ooh," she said.

"Yeah, I know." I leaned back. "Enjoy."

I was really getting a feel for this girl. The way she treated me and Logan like fetish material at times, she had to love the idea of getting sandwiched between us.

Essentially giving Erin what she wanted was teaching her a bad lesson. That wasn't great. On the other hand, I was horny and having an eager little tongue buried in my snatch sounded good to me. She didn't disappoint.

She happily spread my thighs and lapped away at my overflowing vagina. Her nose kept bopping against me as Logan's hips knocked her around a bit, but she was determined. She did her level best to keep her tongue licking despite the turbulence.

I ran my fingers through Erin's hair while she licked me. I alternated smoothing and taking a loose grip when I wanted to guide her. Mostly I just let her do her thing. It was pretty fantastic. Even better as I got an excellent seat to watch her ass get railed by my brother all the while.

I was pretty sure Erin came first, and who could blame her. It got to be kind of a blur as I was overtaken by the sheer ecstasy of the situation. Our orgasms fed each other symbiotically, and we traded periods of bliss for an unclear period of time.

Logan brought it all to an end. It was impressive enough he'd lasted as long as he had, all things considered. I didn't even realize he was cumming until her pulled out of Erin and dribbled the last of his cum on her butt. The knowledge that the rest had been spurted inside her carried me through my final orgasm.

The three of us lay half-comatose for a while. We were drained, happy, and lazy.

We gradually migrated into a loose ball in the center of the bed, not that there was much extra room for all of us to begin with. I had the sole article of clothing between us since I was still wearing my shirt. Both Erin and Logan snuck hands underneath it at various points. I just kind of let them. I was in the mood to be fondled if they were inclined.

I participated a little. I cuddled on Logan's chest for a while, then played with Erin's tits a bit. I tasted her pussy off her finger at one point and I couldn't even remember whose idea that had been.

It would have been so easy to fall asleep with them. I was sorely tempted. But I'd been so bad already.

"It's getting pretty late," I mumbled sleepily.

"It is," Logan agreed. He tried to pull me closer.

I giggled and pushed away, rolling off the bed to my feet. "I need to go."

"Stay," Erin said.

"I can't."

"Sure you can. You-"

"Gun, tell her I can't."

Logan sighed. "She can't, Erin."

Erin looked confused. "But-"

Logan wrapped his arms around his girlfriend and covered her mouth with one hand. "Good night, Kelse. Love you."

I smiled. "You too, bro."

I started to walk away, then thought better of it. Logan's blanket had been knocked to the floor at some point. I picked it up, straightened it out, then flung it across him and Erin.

After tucking them in snugly, I kissed Logan good night. Again with the being bad.

"Me too?" Erin asked.

I hesitated, taking in the innocent pout in her expression, then nodded. "Ok."

I kissed her as well. I kept it short, but it was still enough to do funny things to me. The sort of things that usually only Logan made me feel.

"Be good," I said. "Go to sleep."

"Yes, Mom," Logan said.

Erin thought that was funny. "Yes, Mommy," she echoed.

"See, that. That's not being good."

They mumbled some half-assed protests of innocence. I ignored them and shut off the light on my way out.

****

I woke up early in the morning to Erin sneaking into bed with me. Her naked body was snuggled up with mine before I could formulate an argument. At that point, I couldn't find it in me to kick her back out.

"Don't worry," she whispered. "I have to leave soon anyway. Have to get to work early."

"Then what's this about?"

"Nothin'. Just wanted a quick cuddle with you."

"This isn't making me any more of a lesbian, you know."

"Perish the thought."

Hidden in her self-assured tone was the shared knowledge that I'd previously let her lick me out to multiple orgasms and was now accepting her naked cuddles. She didn't have to make me anything I wasn't. She just had to have a certain amount of patience. Wait for me to give in.

"You're Gun's girl," I said.

"I'm no one's girl." She shifted a bit and put her hand on my tit. "But yes, I am with your brother, not you. We all agree on that, I think."

"And yet you keep trying to seduce me."

"Is that what you think I'm doing?"

I shrugged. "I don't know. Maybe."

"Maybe you're right. Truth be told, I don't exactly know what I'm doing." She circled my nipple with a single fingertip. "But you two are by far the most interesting brother and sister I've ever met, and I just can't help myself."

"You haven't tried particularly hard."

"Perhaps. I don't have the restraint you two have, that's for sure. The way you feel about each other, and you still just tiptoe around it... I don't know how you do that."

"We have to."

"Why?"

"Because... because Gun's gotta be my brother first."

"As opposed to what?"

"Ugh. I don't really want to talk about this." I rolled away from Erin. "Let me sleep."

She followed me. "As opposed to what?" she repeated.

"Dammit. You know how couples break up all the time? Married people get divorced? Friends stop talking?"

"Sure."

"Well... siblings don't stop being siblings."

"I know some people who don't talk to their family. Siblings included."

"Not if they love each other and generally get along."

"Well... no. But isn't that true for your other examples?"

"Listen, you're the one who asked. Don't be starting an argument."

"Sorry." Erin kissed the back of my shoulder like it was some kind of apology. "But I can't help feeling like you've trapped yourselves with fears over nothing."

"That's a possibility," I admitted. "But we're happy, and we know who we are, and we're never ever gonna lose each other."

"Well-"

"And we're mostly just siblings. No one else ever found out what we do, 'cept you. And that was only 'cause Gun blabbed."

"Ok, that part is fair enough. A lot of people wouldn't really approve of you guys the way I do."

"Yeah. You're pretty fucked up."

Erin laughed. "I am. But look who's talking."

I couldn't help giggling a bit too. Some of the tension faded in our shared laughter.

"I like what I have," I said after a moment. "We know what we're doing."

"If you say so."

"I like you," I said. "Gun likes you. You're a bad influence on us. You know that, right?"

"Yeah."

"Who knows. Maybe you'll be around for a while. Maybe you and Gun'll get married."

"Now, hang on a sec-"

"But I'm not gonna let it change me and him. Not in the important ways. Whether you stay or leave, we're still gonna be us."

"I get that." Erin ran her hand down my shoulder and arm, then explored my bare thigh. "I'm just saying it'd be super fun and sexy if you guys did more stuff together."

"That's-"

"Think about it."

"I have. Many times. You must know that."

"I guess I do." She kissed my shoulder again, then pushed away with a reluctant sigh. "Anyway, really must be going."

"You weren't kidding about the early thing, huh?"

"Really wasn't." She smacked my butt before hopping out of bed. "We should do some more threesome stuff, yeah?"

"Um..."

"Yeah, totally should. We'll figure it out. Get together some night when we're all super horny. I'll get Logan to pound my butt some more maybe. That seems to work for you."

"Conniving bitch."

"Ha, yeah. I guess I am." She stepped out the door. "See ya, Kelse."

"Yeah. See ya."

I thought I'd be able to just go back to sleep after she left. I was wrong.

I wasn't turned on, exactly, though naked cuddles had given me a shove in that direction. I was just... something. Not in sleep mode, that was for sure.

I got up and padded naked down the hall. Logan was still asleep. I stood in his doorway for several long minutes, torn with indecision.

On one hand, I wanted to crawl in with him. On the other, I was leery of Erin's influence, and unwilling to do something stupid just because she was in my head.

I couldn't hold out forever. I slipped silently right up to my brother's bed, then snuck under the covers. It was warm and secure next to him. The small anxiety in my chest faded, and I was soon back to sleep.

****

For the second time that morning, I woke up to some light molestation. Logan fondled me awake, which was honestly one of my favourite things in the morning. It just didn't tend to happen when we were both behaving ourselves.

Aside from perving on his unconscious little sister, which was bad enough, he was also totally hard. His cock twitched occasionally as he played with me, and I just watched it for a while before moving. There was something about the blatant evidence of my brother's arousal that really worked for me sometimes.

"Someone's being quite presumptuous this morning," I said.

"Hm? Is that someone the one who climbed into bed with the other?"

"No. It's the one- oh forget it."

Logan smiled and booped me on the nose. "I couldn't help myself. You're totally irresistible when you're naked and sleeping next to me."

"Clothes next time. Got it."

"Let's not be too hasty."

"No, indeed not."

Logan gave my boobs a final squeeze before sitting up. I wondered what he'd do if I rolled over and stuck my ass out at him.

"Erin must have left, huh?" he said.

"Yep. Something about work, I think."

"Yeah. Odd hours sometimes."

"Uh huh." I looked pointedly at his throbbing erection. "Hoping she'd help you with that, were you?"

He shrugged. "Her or... someone else, maybe."

"Lucky girl, this 'someone else.'"

"That remains to be seen."

I grinned slyly. "I think she could be convinced. If you were charming enough, that is."

"Stick my dick in her face. Got it."

Logan, goofball that he was, proceeded to do just that. He threw a leg across me, straddling my face, and lowered his cock to my mouth.

I played along at first and parted my lips, allowing him to carefully insert his penis. He gently face-fucked me for a moment until I cracked and started giggling too hard to keep up.

"That was you being charming, was it?" I laughed as he rolled off me.

"Funny thing is it kinda worked."

"Well... you're not wrong, actually." I got up on my hands and knees. "It actually has been a while since I gave you a blowjob though."

I arched my eyebrow and waited. We'd just been messing around up to now, in our own way. I wasn't actually sure if he was in the mood for something more than that.

"Maybe just a quick one," he said, acting reluctant.

"A quick one? Really? What am I, your girlfriend?"

"What?"

I pouted. "Ask nicely. Like it's a nice thing for me to do."

"It is a nice thing."

"So act like it."

Logan rolled his eyes. "Please, sis, can you suck on my cock a little?"

"Oh for-"

I was about to protest that he wasn't taking me seriously. He stopped me with a hand on my cheek. My eyes met his and latched on to his focused gaze.

"Please," he said, for real this time. "You know how much I like it."

A warm flush started in my chest. Goddamn, the way he could make me feel when he wanted to...

"Ok," I said.

It was what I wanted anyway. I felt like such a slutty little sister, lying on my tummy in front of my brother, getting ready to fill my mouth full of his cock.

Logan got comfy, reclined in a half-upright position. I made eye contact as I slowly sank my lips down his shaft.

There was a reason we didn't do this sort of thing too often. In a different reality, I could see me waking my brother up with a blowjob every morning. I loved everything about it. I loved the way it made him feel, I loved the way it made my pussy tingle, and I really, really loved the sheer naughtiness of it. Sisters weren't meant to suck their brothers off. Not even a little.

"Mmm, good girl," Logan breathed as he stroked my hair.

My body heated up even more at the pet-like compliment. Damn him. Now I really wanted to play with myself, but I had a job to do.

"Good little sister," he moaned.

I bobbed my head rhythmically and pressed my tongue hard on his shaft to really drag its soft wetness against him. I gave him my best pouty blowjob eyes since I knew how much they turned him on. I was going to make him cum before he got me too horny to focus. That was my new goal.

We carried on like that. Logan played with my hair and gave slightly patronizing, totally arousing compliments. I worked his cock like a porn star. I knew I'd won when he went quiet and leaned his head back. Not that he was losing by any means. Lucky bastard got to cum in his sister's mouth.

I couldn't help a long, low moan as my mouth received the first spurts of my brother's orgasm. I swallowed the first few shots, then held the rest until he was done.

I carefully pulled my mouth off Logan's cock, then held it open so he could see my tongue bathed in his cum. I then exaggerated the motion of swallowing it before opening again to present a clean mouth.

"Bad girl," Logan said.

"You love it."

"I do."

He pushed himself up into semi-reclined position against the headboard. I crawled nearer, then knelt beside him. I saw him check out my visibly aroused little pussy and made no attempt to hide it.

"You know what I was thinking about?" I asked.

Logan ran his hand from my knee up to my thigh. I stayed perfectly still and let him run his fingers over my warm, sensitive skin.

"No idea," he said.

"Well... you remember that time..."

"What time?"

His caress was sweet and titillating on my inner thigh. It took deliberate effort not to squirm.

"My first time," I said.

His hand faltered just briefly, barely noticeably. "Oh."

He wasn't quite sure where I was going. I could tell. It wasn't a subject that was brought up basically at all between us.

I pushed my hair back behind my ear. "You remember how nervous I was?"

Logan gave a crooked smile. "Of course I do. You burst into my room and wouldn't stop rambling for, like, an hour."

"It wasn't that bad."

"Oh it was. You were so into your boyfriend at the time, and you knew he wanted to fuck, but you were all... you know."

I blushed. "I know. Super anxious. I thought it would hurt, or I'd do it wrong, or... I don't know. It seemed like a big deal at the time."

"It wasn't." His thigh-strokes had become as much about reassurance as feeling me up. "It really wasn't that big a deal."

"I know." I looked down and twisted my fingers together in sympathetic remembrance of my past self. "But that's the way it felt." I looked back up with sisterly adoration in my eyes. "And you made it better."

"We shouldn't have done it."

"I know that. Of course I know that. But it was what I needed at the time. You made it so perfect for me. I never would have felt as safe and loved with anyone else."

"Kelse..."

"I love you for that, you know. For always being there when I need you."

Logan flushed slightly. "Usually it's not anything I mind doing."

"No. I seem to recall you rather enjoyed yourself."

He nodded. "But..."

"But once was enough. I know. Probably too much all by itself." I leaned in and kissed the side of his forehead. "You'll always be my brother first. That's the most important thing."

"Oh. So... you're not asking to do it again? I really thought that's where this was going."

"Is that why you look so worried? I wouldn't have thought it'd scare you that much."

"It doesn't." His hand went to my breast. His voice dropped to a near-whisper. "It's just... if you asked, really asked, I wouldn't be able to say no."

A little thrill went through me even though I knew that wasn't his intent. "That's why I'm so careful about what I ask. And I've really thought about this."

His eyebrow went up. He wasn't as in the clear as he'd thought. "What's that?"

"Gun... I really think I want to try anal."

Such a conflict of emotion crossed his face. It was kind of hilarious, but I kept my expression firm and serious since I didn't want him to think I was joking.

"You do, huh?"

I nodded. "I think I have to. I can't stop thinking about it."

"So do you need a new toy or something?"

"You goof. I don't want your help to go toy shopping or anything. Not this time. You know better."

"And I suppose you don't want my help finding a suitable boy to help you out either."

"Right."

Logan considered the issue. I did my best to look sexy and angelic without being too blatantly abusive of my womanly charms.

"It's really hard to say no to that," he finally said.

"Then say yes."

"But we really, really shouldn't..."

I bit my lip and gave my brother sad puppy eyes. "You made my first time so special. I never worried about you hurting me. I want that again. I really, really want it to be you. Just for the first time. That's it."

"Kelse..."

"Please?"

"Goddammit. You know I will. Don't give me that look."

I broke into a wide smile. I launched forward and showered his cheek and neck with kisses. "Thanks, bro."

He laughed and pushed at me, then just accepted some nakey kissy times. It wasn't on the lips, so it was fine. Kinda.

"You've seriously never done it before?" he asked.

"Of course not. I would have told you."

He shrugged. "You might not have. You don't tell me everything."

"Everything important I do. And you told me the first time you did a girl in the butt."

"That was only because it was a funny story." He paused. "Kinda gross too. And she never went out with me again, so maybe not all that funny in some ways."

"Point is, no. I never have. It's only after seeing you and Erin that I've really had any interest." I rolled my eyes. "And of course since then, it's been all I can think about."

"You could still get a toy. Try it whenever you want to."

I tapped him lightly on the shoulder with my fist. "You already promised."

"I did. Don't worry." A stupid grin spread across his face. "I'm not the sort to promise a girl a butt fuck then back out."

"'Specially your sister. You have to live with me after all."

Logan glanced at the time. "I could call in to work, say I'll be late. You ready right now?"

"No, no. Don't be silly. This evening. I want plenty of time, no rushing. Do it right. Make it special."

He nodded absently. Thinking. I lay beside him, snuggled in for a few minutes before I'd get up and moving. I smiled to myself as he squeezed my ass. I hadn't noticed until then, but he'd gotten rock hard again while we'd been talking. I knew he wasn't as reluctant as he let on. I respected it though. One of us had to try and stay sane.

It had to be Logan, was the thing. I knew we shouldn't, but it was what I needed. I needed my big brother. Sometimes that was just how I was.

****

I was in the kitchen a little later on humming to myself and waiting for the toaster to pop. I had showered and dressed, and was well on my way to being ready for the day.

Logan was a bit slower, but not by much. I heard him coming, so wasn't terribly surprised when he walked up right behind me. I thought he might have just wanted some toast too, but instead his hands landed on my hips. Not looking for toast, then.

The toaster popped and I threw my two slices on a plate. I started buttering them while Logan undid my jeans and slid them down my thighs.

I didn't know exactly what my brother was planning, but I was certainly in the right mood to wait and find out. I calmly proceeded like nothing was amiss, prepping my breakfast as casual as could be.

Logan got my pants down past my panties. He rubbed the front of my underwear at first, then slipped inside. I bit my lip and tried not to show any sign of acknowledging what he was doing.