Lol this is hilarious.
I'm currently going through similar thing with a buddy of mine. One of my gf's best friends and a buddy of mine broke up about a year ago and the bf moved into our place as she didn't have an immediate other place to move into. She ended up living with us for most of the last year and got her own new place right before Xmas. Now, one night this past summer we had a 3 some with this girl. The fucked up thing now is my buddy and now, our ex roommate, are back together and the girl proceeds to tell my buddy what happened this past summer! Like... why? So now every time we hang out, and we do almost every other weekend since they started dating again a couple of months ago, its super weird between us. And like I get it, but why the fuck did she have to tell him????
In relation to this thread, if any Sherdogger banged my gf or her friend in the past, ya we've banged the same girl lol