Recently my best friend of 11 years(we’ll call her Sarah)started chatting with my ex(we’ll call him brad). It made me a little uneasy as me and brad didn’t exactly end on great terms. He would ask me to do sexual things that made me very uncomfortable(we were both 13 at the time). He also spread rumours that I have stds and lots of other crappy stuff about me. Sarah has been talking to him a lot more recently and tells me all about their convos and how they facetime until 1am. This makes me very uncomfortable, and she admitted to having a crush on him. I warned her about him asking me to do sexual stuff and she dismissed it and said “teen boys our age have needs”. She then proceeded to tell him what I had told her about him asking me that stuff which he denied. She told me “brad says he never did that” and it sounded like she believed him. I asked her if she thought I was telling the truth and her answer was “it’s possible”. I feel like I’m an asshole but she put herself into this situation and I hate that she’s talking to him. He’s my ex and she likes him. The whole situation makes me so uncomfortable and I don’t know what to do. I’m scared to confront her about it.