Lost Bet

I live in a double storey house with my best friend, who I've known ever since we were in high school. Although I'm not gay, I for some reason feel sexually attracted to him. I don't find him handsome, but I always fantasized about stripping him completely nude, playing with his body and, if I was feeling particularly horny, fucking him in his ass. Maybe it's because he has slightly feminine facial features, a distinct lack of facial and body hair and a boner-inducing bubble butt. One day, I got the opportunity to do all of that and more.