TW- Rape. My friends still talk to my abuser

So a few months back I get back from seeing some friends and one of the friends, who I know is going through a tough time and also very drunk, asked if he could just sit with me for a little and just talk about what’s going on. At this point he was a close friend who I trusted. I let him and let’s just say I don’t trust him anymore.... I told one other person what had happened but because he hadn’t actually raped me I thought I would just try and forget about it eventhough it killed me everyday to still try and be mates with him. A few weeks later at a small gathering he raped my best friend. Obviously there were no witnesses so loads of people didn’t believe her other than me and one other person. We have a large group of friends, most of whom still talk to him and are friends with him even though they all know what he did to me and my friend. I don’t want to say that they can’t be friends with him and potentially lose all my friends but I also hate hearing them talk about him.