Any thoughts ?

So my boyfriend still talks to his ex because she knows something personal and he thinks she gonna throw it against him .. anyways my boyfriend is close to his ex mother and her mother was tight that they broke up. Anyways her mother and the Bestfriend mother is planning a talk show and want my boyfriend to be there. I told him no he can't and he got mad. Like why are you even around them. he has a girl Bestfriend and his ex is also his girl Bestfriend Bestfriend 😭. He says he has to be around his ex because of his Bestfriend and if not his Bestfriend gonna get mad. To me, I feel like he has no respect but his ex does not owe me loyalty but I'm just so mad.