AITAH for telling my friends what my ex did
So this may sound like a dumb AITAH question but I am genuinely confused and want to know if I indeed am the AH.
I (20F) have an ex (22M) which I was together with for about three years. Because of how long we were together we had a mutual friend group, but we did keep some of our best friends separate. For example my (ex)best friend (20F) and my ex did not get along at all so they never really became friends. When I say “did not get along at all” I mean AT ALL! They hated each other to the point where I couldn’t even mention one to the other. I could understand hear POV since in hindsight this ex was a real jerk. He was a serial cheater and wronged me in all possible ways but like they say “love makes you blind.
Fast forward to three years later, me and said ex broke up. After this breakup my exbestfriend and ex start hanging out a lot, I told her I wasn’t really comfortable with this since he did all of those bad things to me and I’d rather not have my best friend spend time with a person like that. (Yes that might have been childish of me). After the breakup most of our mutual friends declared themselves Switzerland and kept hanging out with both of us, which I didn’t mind because they also have been friends with him for three years, unlike the ex bestfriend.
This whole ordeal lead to my ex bestfriend resenting me, without me even knowing it. Luckily we made up about a month later and everything seemed fine. Until a year later one of my other friends said she had to tell me something and had been sitting on it for a year because she was afraid how I and ex would react to me hearing this. This friend told me how my ex bestfriend and ex had slept together and she was the only friend my ex had told about it. I was LIVID. Yes my ex can sleep with anyone he wants after the break up, but to think my ex bestfriend could stab me in the back like that?!
In my anger I told our entite mutual friend group (who also don’t like this ex bestfriend) about what my ex had done and I confronted the ex best friend about what she did. She did a lot of apologising and crocodile tears but I had made up my mind I never wanted to see her again. This eventually got back to my ex (I assume ex best friend got mad her secret got out and told ex about it). Ex is now going absolutely mental on me for telling everyone because the friend group is now icing him out. Which I did not ask them to do btw. Ex best friend is mad because I “made her look bad” to my friends and we live in a small town so “word spreads fast”. They are both actively trying to now make ME look bad to everyone around us and people are now starting to ice ME out as well.
I’m just so heartbroken because not have I only lost the girl I thought was my best friend and eventually maid of honour, but also my friend group is slipping away. Ex and ex best friend claim they will stop speaking badly of me (basically spreading lies), IF I set everything right by saying I lied or exaggerated about how everything went down. My friends are saying because this whole deal happened a year ago I should forgive them both and pretend like it never happened, but I’m hurt about the situation and feel like I have a right talking about it.
AITAH in this situation, and if, how do I fix this? I don’t want to lose my friends.