Watching from a friend's house my stepdad smashing my girl in the living room

Turns out folks we're fucking the same girl with my stepdad! Mess up, right? Well, I was chilling at a friends house, and through the windows I could see my girlfriend having passionate coitus with that son of a bitch that is also banging my stepmom. They have little wine to set the mood right then she throats his junk before riding it and taking it in doggystyle, among a couple other positions.