I feel I have unresolved feelings over a situation that happened this summer. So this summer while my partner and I were polyamorous, I met this guy at a bar that I liked and wanted to be partners with. But then I got way too drunk and ended up blacking out that night. The next morning, I found out that my friend had basically taken advantage of the situation, exchanged contacts with him, and proceeded to pursue him, despite that she knew I liked him and despite the fact that she herself had a boyfriend who she was completely monogamous with. She would bring him to all our outings after that and tell me how great he was and would literally cheat on her boyfriend in front of me with the guy that she knew I liked. She would also take him home to our apartment for sleepovers and this whole thing made me feel uncomfortable. I talked to her about it, but she kinda denied it and said she didn’t do anything wrong, which I guess she didn’t but I felt pretty betrayed. To this day I still don’t know how I feel about it or what to think about it. I don’t know if she was in the wrong or maybe I was in the wrong for thinking that. Her boyfriend to this day still doesn’t she cheated on him, but I don’t feel it’s my place to tell him, especially since I don’t know him personally. I just feel all sorts of bad and weird about this situation and I don’t know why and I just want to move on from it. Any advice?