Roommate's Girlfriend

Back in college, my roommate's girlfriend lived on the floor below us in our dorm. She would come up and hang out with us a lot, and she was both attractive and cool. I was dating someone at the time, so there was never anything between us. But one afternoon, she came up to our dorm and my roommate was off doing something for a few hours. She asked if she could just hang out until he came back. I was laying on the bed studying and told her 'sure'.

She climbed up on his bed and laid down to take a nap. Pretty soon she was dead asleep, completely out to the world. I don't know what gave me the impulse to do it, but I started masturbating with her right there. It wasn't just that she was in the same room, but I literally stood there right next to her and had my orgasm about three feet from her face. It was really erotic and naughty and she never knew.

I've always had this fantasy that maybe she 'did' know, that maybe she was awake and was just pretending to sleep but was really watching me through barely open eyes. In that fantasy, she was turned on enough by it that she masturbated in her own bed later that night with the lights out.