I am currently having difficulties with what to do in regards to a friendship. I met this friend a little over a year ago and we as well as another of their friends hit it off and the three of us became friends quite quickly. We were introduced through a mutual friend. We would primarily hang out in a group of four. Myself and my two new friends aswell as a "friend" I've known since childhood. (We all go to the same Uni)
This "Friend" I have known since childhood has been a problem in my life for a very long time, he has been a terrible friend and actively detrimental to me for at least 10+ years now but I kept hanging out with him because of the familiarity and convenience (I don't like doing things alone and don't have many friends that I can see on even a regular basis)
I told my new friends about my issues with him and how he has played a very large role in alot of my behavioral and mental issues. We still all ended up hanging out together in a group.
I feel only recently that I have been in a place where I can finally cut him out of my life and move on. And that wouldn't be a problem except for one of my new friends started dating him. On top of that because of a mental health episode I had to step back from contact with my new friend for a bit because I was not in a place where I was good to be around.(I did communicate that I would be absent for a bit. I have since started therapy and am doing much better) We haven't spoken in a little over 2 Months and I feel like I am at a place where I can engage healthily again.
I am having conflicting feelings about engaging again based on a couple reasons.
I feel betrayed because I told them all about how bad this person was to me and they still ended up dating him.
I don't know if I can trust her now that she has chosen to trust someone I really don't trust.
I don't think it's appropriate to be friends with someone Who actively hates your partner so I don't think I can be that person regardless of if she wants to still be friends.
Thank you so much for reading and maybe responding! If you want any clarification I am happy to give it. Any and all perspectives and advice as welcome!