Luke wasn't proud of it.
On the contrary, he was quite ashamed of it, to be honest, he was freaked out by what he felt. It started with small things like their smile made him smile, their hands were warm and made him feel at home with him, then he started to have some innocent dreams about them and how he wanted to make them happy... Then he began to wonder what their lips would feel like if he just innocently kissed them. He simultaneously began to grow feelings differently from brotherhood to both Pruno the adorable guy that always is there to listen, and Enychta the hot guy who intimidating but is an adorable jerk that can be incredibly stupid sometimes even though he acts smart.
He couldn't tell anyone that, or else he would die of embarrassment as he realizes what he feels. He shouldn't feel like that because they are practically his family! How can he feel something so impure towards his family? It was awkward at first as he realized that, he could get random boners by thinking about one of them or remembering one of his wet dreams. As a hormonal teenager, Luke had wet dreams and they normally involved Eny or Pruno, or both at the same time. When he dreams of Eny, he is always taking control over him, and when he dreams of Pruno is the exact opposite as he takes control of him, and when he dreams about both then he is getting both dominated snd dominating, feeling pleasure from the back and front.
"Luke? Are you alright?" Once again comes that deep voice that makes his body shiver, sighing as he opened his eyes to see the purple eyes of Eny staring back at him, he swears he can see stars on those eyes of his! "Yeah, I'm fine." Luke lied, he was far from fine, his heart is slowly bleeding out as he is fighting against his feelings because he thinks they are wrong. It hurts but it's better than be hated by his family, that would be the end of him, being hated by his biological family and now chosen family... "Huh." Eny hummed, clearly skeptical about it, they were on the river that Pruno suggested going to so they could take the blood off of Eny's body, he ate an entire Giant Centipede, and although Luke thought it was disgusting, he also thought it was impressive.
And before you ask, no, they were not completely naked as there was a new addition to this group since Pruno invited the new girl to go for a swim with them, he even offered silk underwear for her to change to when she was done, and the for gladly took the new underwear. Luke sometimes wonders how Pruno can be so gentle and adorable when both he and Eny were not good influences at all on him while they were growing up.
Eny has this whole aggressive side that he puts up to protect this group while Luke is a thief. He was the son of the God of Travellers and Thieves, what would you expect from him? Eny taught him well and soon he could steal easily, but always using the Mist to protect himself. All three of them could control most to some extent while Eny was the best of them at controlling it as he could even fool a Demigod using the Mist! It sucks because there were some Clear Sighted mortals that they met who looked at them wrong but Eny always kept them away, talking about keeping things away, Eny told him about a place called Camp Half-Blood and how apprehensive he is of it.
How he told both him and Pruno how the Gods were not trustworthy and that they would someday use them as paws to their little game and for some reason, Luke felt like Eny spoke from experience or like he knew something he didn't. He asked him once and Eny told him that he was the Son of Nyx, Goddess of Night, and that the Fates were his sisters, and like that he knew some things about the future that he would try to change. Luke still remembers how his mother would shout about him being a cursed existence that would destroy the world, or how he should have killed himself before, or how he should have died on that cliff and other things he could not understand...
When he asked about his future, Eny told him he was supposed to destroy Olympus. This shocked him to his very core and he began to wonder why, Eny explained that he was supposed to suffer and hate the Gods, so then he could team up with their worst enemy and eventually kill himself to save Olympus. He remembers how Eny smiled at him that day, a melancholic smile as he said: "And all because of a prophecy... Something you were destined to do, assigned by the Fates... Those bitches." He cursed the Fates so much that day, he was 11 years old when he asked that, and till this day he still remembers how he felt about all that.
He didn't know if knowing his fate would change it or would make it worse, but Eny thought he deserved to know that and Luke was thankful for that, one more thing Eny was good at, he was sincere and truthful. But he still wonders what he meant when he said "I wasn't supposed to exist anyway." Like, what does that mean!?
"Luke~ You're spacing out again!" Came the cute voice of Pruno that still retained some of his soft, child-like voice. On his boxers, he began to rub Eny's muscular back as Pruno rubbed his back, it was a little thing they do to wash faster. Looking at the scar on the back f Eny, he traced down his fingers through them all, there was not only one but many more. He gets them from fighting, both mortals and monsters, because of his aggressive attitude he often gets into fights with humans where he uses his fists to break people's noses and more. It happened when Eny tried to get Pruno an education by going with him to school, he used the Mist to make the principal of that school think of them as new students and he got Pruno the things he needed.
He looked like a delinquent with his sunglasses, black leather jacket, and military dog tag together with his black hair, and the haircut he got made him look 100% like a delinquent. Of course, he had some scars on his face that made some people think he was truly a delinquent and part of some gang, combined with his looks made him quickly popular. Everyone gossiping about him and wondering why he always walked with Pruno the boy that as soon as got into that school he became everyone's favorite! Not only because he was adorable but because he was smart, he didn't know some things but he was quick to learn and he even taught some children too, which made his class's average go up by 20%.
So soon came the rumor that they were both dating, which they didn't deny because they didn't know of such rumor, and the way they interacted made it clear to everyone, but in their eyes, they acted like they always did! Hugging, Eny would let Pruno sit on his lap, Eny would give Pruno a pig back ride when he asked to, he carried his books, he bought him food, he even studied with him!
What Luke doesn't know is that Pruno knew of these rumors because it was he who spread them.