Loving Living Together

I am currently living abroad on a gap year program. I'm living in an apartment with 4 other guys and we have 3 bedrooms. In my room is myself and one other guy, we'll call him Mark. Mark is 100% straight, and 100% hot! He has no problem walking around in his boxers and on occasion he'll drop his towel after the shower and I can get a good look at his amazing ass for a few seconds while I think about having sex with him.

I'm a sneaky person, I have some pictures of Mark walking around in his boxer briefs, and even a few of his really hot ass, but that's not what I want to share with you. Something happened last night. Mark went to sleep pretty early, and surprisingly slept on his back. He's a light sleeper, so I knew I couldn't do much. But I touched him. I felt Mark up so good last night. I thought he had a pretty big cock to begin with, but wow! I touched it, and it's huge! The best part was, when I touched it, it started to get hard and throbbing. I almost came immediately. I spent a good 5-10 minutes rubbing him till he was hard, then he started to wake up so I couldn't jerk him. Doesn't mean I won't try another day...stay tuned.