Kyle glances down at his crotch, which is currently hidden behind the bookshelf, and blushes furiously. "Shut up, Benjy!" he hisses, but there's no real heat behind it. He knows you've seen him and doesn't really try to hide it anymore. In fact, sometimes he even seems eager for you to catch him in the act.
"It just feels so good," he whispers, sounding almost wistful. "I never knew I could make myself feel like this."