This is a true story. Me and a buddy were at a house party about 10 years ago and it's mostly people we had went to high school with. We all have some drinks, more people start showing up and things are getting rowdy. I'm drinking with a girl that I'd went to school with, conversation starts getting sexual so we decide to move things into the only bathroom. Lights go off and she starts blowing me while I'm sitting on the edge of the bathtub. This only goes on for about 5 minutes before we get busted by the host of the party for holding up the bathroom. I go outside and have a smoke with my buddy who I'd come to the party with and he decides that it's time to start recording some video of the party. This doesn't last too long, we go upstairs to the bedrooms and one door is mostly closed with the lights on so we get the bright idea to record as we bust in the door. It's the host of the party getting a blowjob from the girl I was just with maybe 20 minutes earlier but the hosts girlfriend is also in there with them. They get mad and tell us to fuck off, we happily agree with a thumbs up to him and get out of there. From there we just decided to talk a walk, the booze was catching up to me and I needed some fresh air. We leave for about 45 minutes, grab some snacks from 7-11 and head back to the party and that's when we see it. It's that same girl that I was in the bathroom with and was blowing the host of the party. She's sitting on the back steps of this house making out with some dude we all went to school with. Now I'm not too sure what the etiquette is here but if she wasn't saying anything then I sure wasn't. I just offered them some candy and went home. tldr; was at a party, got a bj from a girl in a bathroom, same girl went and blew the host of the party with his gf in the room and she followed it up by making out with another dude I went to school with afterward.