Can't get over the fact that my ex hooked up with some random chick after a fight at a beach retreat. Me and him aren't friends on facebook anymore but I know who the other girl is (mutual friend) and I'm pretty sure she knows that I'm still upset over it. Both of us were really drunk (while we were fighting too) and he was so drunk that weekend that my friends and I had to leave. Idk if he did this to show spite towards me for hooking up with his best friend (before we started dating) or if he did it because he wanted to and didn't care. Thoughts?