y would he do that?

[Dellathia]

a couple days ago me and my ex, and his friends got together. Me and my ex ended up having sex in a room and then when he was done he just left, and motioned for one of his other friends to come in. As his other friend came in, he closed the door. His friend wanted to have sex with me , but i told him no, and that was just it. So i wanna know from a guys point of view, y would my ex do that to me. like does he think i'm a ho or something