How to Deal With Friendship Problems

Nine years ago I was assaulted by someone in my friendship group from school everyone found out that we had quote sex and I was judged for being a flusi. I didn't tell anyone the truth about what happened until I told my best friend four years ago she's part of that group too and she has her own friendship with my rapist. She is still friends with him he was a groomsman in their wedding she posts birthday messages to him online etcMy problem is that all of this hurts me I trusted her with something that deeply deeply hurt me emotionally physically and mentally I feel like he's being prioritized in her life over me it's very upsetting and hurtful i don't