A few years ago I had a female roommate we'll call Carrie. She was 2 years older than me with an Italian complexion, brown eyes, and shoulder length curly brown hair. She was curvy but not overweight, with D cups. For some reason I could never figure out she was really into me, and in blatant (and fruitless) seduction attempts she would walk around topless or fix her makeup in the bathroom mirror when I was in the shower. I would have gone for her in a second if she wasn't so annoying in almost every other way.
Annoying or not, she was hot and I knew she liked me. I tired to be a good boy but eventually I decided to have some fun. I would start to leave my door open a crack when I'd masturbate so she could hear me from across the hall. I liked to imagine her masturbating to the sound of me jerking off. Then, if I heard her come home and start walking up the stairs to the bedroom I would run to my bed and with my door completely open let her 'catch' me. She always just laughed about it.
One night we had been uncharacteristically getting along watching tv and eating dinner. I asked her if she would take her shirt and shorts off. She asked why and I told her it was because I hadn't gotten any in a while and I was horny. She offered to 'help me out' with that problem, but I said that wasn't a good idea since we were roommates. Confused, she disrobed down to her underwear and said, 'What do you want me to do now?' I told her to sit down on the couch next to me. She did, and I started to rub her pussy and lick it from outside of her panties, enough to get her really turned on and wet.
Then I stood up, took off my shirt and pants and faced her. I asked her if she wanted to touch my cock. She was into the moment and started to reach for it but I slapped her hand away and said she wasn't allowed. She smiled, embarrassed. I started to slowly stroke my cock; her breathing was getting heavy. She slid her hand down to her panties but I reached over and pulled it away, telling her she was not allowed to relieve that building sensation. I jerked off and as I would get close to coming her eyes would get wide and she would beg me to let her touch herself, her talk getting dirtier as she was getting hotter. When I was about to come and she was worked up watching me I would stop, on the edge, dripping precum onto her knees. I did this twice and the third time I came on her legs and stomach.
Then I told her it was okay to touch herself, and she went at it with reckless abandon, playing with those beautiful tits, rubbing her pussy, and going on about how hot my cock made her. I stood over her with my half stiff cock inches from her, and watched.
All things considered, maybe she wasn't such a horrible roommate.