Fucked my roommates gf while he slept in the next room [MF] [Cheating]

I just graduated from college in the spring so this was probably February. I’d known my roommate and his gf since sophomore year and they’d been together since high school.

This girl would always get really handsy when she was drunk and there’d been a couple nights before this where we would be alone and I’d feel her up while talking.

Finally, one night while her younger brother was visiting, her bf left the party we were at early and was asleep by the time we got back. Her brother fell asleep on the couch as soon as we got back but she was still really talkative so we went and sat on my bed.

As she talked I put my arm around her and slowly moved my hand down the top of her dress. She kept talking so I kept going. With my other hand I was moving my way up her thigh. Finally she asked if she could kiss me and we started making out. I stood up and moved between her legs and we continued to kiss while I slid her dress up above her waist.