My bf of 2 years has a female friend. In the beginning, I wasn’t concerned and encouraged their relationship. But then she kept inserting herself into our relationship, finances, etc. Her name is on his cars, property, etc. I didn’t mind, but then she started inserting control over those things, although she didn’t pay for any of it and doesn’t. Her name is on there “for emergency purposes”. She was encouraging of our relationship, until we moved in together. She said she didn’t expect us to be so serious and said she wasn’t comfortable with it. I immediately saw red flags. 2 years, almost 3, that I’ve dealt with nonstop drama. She came to me and said my bf is abusive, will beat me up, etc. I’ve never experienced anything of the sorry and when I told my bf, he confronted her and she tried to lie and say it didn’t happen. Shes lied so many times to both of us about each other, always in the end being outed as a liar, yet my bf still takes her side and says “she’s like my sister”.

I have him an ultimatum and he chose her. Said I wouldn’t understand. So I finally said fuck it and let them be. But I’ve noticed he will say that they don’t talk, but his fb says otherwise. I’m not allowed access to his phone. He’s literally hiding the fact that they talk from me. Well, today I took a nap, woke up and he told me “she called me and asked about you and I told her this this and that”. I found it super weird that he would tell me this randomly out of the blue. Then I learned that a friend of mine was at her house and heard the conversation. He knows this conversation will get back to me so I think that’s why he is telling me. I don’t care but I’m done dealing with her. Apparently she called me a cult on a phone, always has said this so I’m not shocked. But why is she so comfortable talking shit about to him? I think there was more to the conversation than what he’s letting on.

I’m done. I want to leave. I’m not a 2nd option and I’m done dealing with this. When we fight, the first thing he does is run to her. I left him for a month back in 2020 and the first thing he did, the same night I left, he moved in with her and her kids. His own friends think it’s weird. He swears shes like a sister, that he would NEVER have anything with her, that that’s gross. But yet when I say she likes him, “well that’s not my problem, I don’t like her and that’s all that matters”. He says I just don’t know what it’s like to have family.

Would I be wrong to leave?