ah, boy troubles. communication is key. I know you guys have already talked about this but he always takes the other girls side. try to sit down with him and have a conversation where he hears your whole part of the story. also try to get him to witness how rude his girl best friend is being. if he still takes the other girls side, then he not worth it. when it’s too late, he’ll see how much of a bully this girl is and regret his decision. he’s a really nice guy and he should listen to you. if he still doesn’t, well your better off without the drama too. stay strong❤️❤️ hope this helps and that everything works out!