what do i do?

so i’m going through problems with my child father and my mother and idk what to do ... my mother is always being toxic and sayin mean things to my bf but some days she is ok with him but recently she came to him saying she is going to get guys to hurt him and almost mased him he told her if she mase him he will hit her but i knew he wouldn’t but she pushes those buttons .. so now she tells me I should never speak to him again and says if i do she won’t talk to me ... my bf has been nothin but respectful for 5 years and always did nice things for mom and even try to walk away when she’s in his face but this one time he dont it’s an issue and she making me feel i’m with someone who disrespects their gf mother