A whole new world (m)

Kellen lay at the end of the bed, his legs resting against Rhys' shoulders on a slight upwards angle. His ass was fully off the bed, and he had his arms splayed across the bed as if it would give him more support. He refused to look at Rhys, even as his breath fanned against his exposed bottom. 

His balls and cock twitched, remembering the couple of times Rhys had been down there before, but Kellen was nervous. 

He had no idea what to expect. 

Rhys was right. This was an area Kellen hadn't researched, but he didn't think it was important. Why would it be? Who would want to…to put their mouth near someone's asshole? There were no benefits. He could understand someone thrusting into an asshole, since he himself knew that there was a prostate inside and it could bring pleasure. But putting your mouth on it?

It was beyond Kellen's realm of understanding. Wasn't it…dirty? Why would Rhys want to subject himself to this? And, why was he so excited about it?