What should I do about this friend

Okay so For context of this post there is 3 people me, friend A and B. I wouldn’t necessarily say were a trio but were all friends with each other we just never hang out all tg. Me and Friend A are quite close and we dont like friend B and discuss it with each other often talking abt how were closer and that we shouldn’t hang out with B anymore. Friend A has made it clear on many occasions that i would be a fake friend if i hang out with friend B. this was a couple months ago and since then They have hung out a few times. On one occasion Friend A hid me from their story and I confronted them. I was hit with “i didnt wanna deal with you being pissed at me. Now ive recently found out that Friend B also hid me from their story so im not sure how friend a executed that..

I know that this isnt a good but despite all that I do truly like Friend A we have similar interests and Other then what was said before they are a good friend I think? like their there for me and i truly enjoy their company.

Obviously since last year I have matured and realised that This in general is toxic and ive reflected on talking shit about friend B and we have gotten closer, clearing up everything in the past. Since becoming closer with friend B they have said that “friend would sort of say that you hated me but now idc” and bring up how they know i talked abt them to friend a but wont say what i said so i kinda have doubts but anyways.

Im not really sure what to do now