Wanking

I have a roommate that likes to bring home guys a lot. Her room is right next to mine and I hear her getting fucked often.
At first I used to masturbate every time but then it got old and I stopped. But then one night recently she let a guy fuck her in the ass. I could hear her moaning was much different than usual and she kept begging to be fucked deeper in her asshole.
After he came she left her room and went to the bathroom, I can only assume to fart out his cum. When she returned I heard her tell him she wasn't going to shit right for a week, and that's when I blew my load hard.
I'm going to tell her tomorrow that I can hear everything through the wall and that I wank listening to her. Hopefully she lets me fuck her up the ass too!