Is my mother over reacting just a bit too much?... I really need an answer. please!?

My mom overheard a conversation with my boyfriend, and now she hates him and wants me to dump him. He was drunk and made and empty threat that she's completely taken out of context. I talked to my boyfriend about what happened, he apologized, but I made him aware that this wasn't okay and that he needs help and to do something about it and he's considering it because he's beginning to see it for himself. The problem is, she's been fighting with me non stop and i'm really tired of it. I'm also not ready to end it with my boyfriend, because its not something that I chose to do, but something my mom is shoving down my throat. She say's that he's controling me and that I'm not thinking for myself, but if I do what she wants isn't it the same thing? I really need someone to help me out my other friends also think my mom is blowing it way out of proportion and that she needs to step back and trust me enough that I will make the right decision for myself. Whether its to be with him, or be with someone else when I'm ready. Some of my friends feel like my mother has never trusted any of my decisions and has never believed that I can think for myself. They all love my mom and knows that she loves me and wants what's best for me, but they think that she has very little faith in anything I do and that if I say something that goes against her, that its not me thinking for myself that its someone telling me what to think and say. HELP ME PLASE!