Boyfriends mom is a bitch and he's a mamas boy

I have not done anything wrong to my boyfriend or anything to his mom. I am always in a good mood with her and I always help her clean up and ask if she needs help. I found out she says stuff behind my back. I asked my boyfriend to talk to her and He said no. He has no interest in asking her to stop talking bad about me. He listens to everything she says. I don't want him to pick between us. I just wish that I could not have her talk bad about me. Because if we were to get married I'd want to consider her a mother. Should I just dump him? I've tried everything and said it to my boyfriend in the nicest way possible.
Boyfriends mom is a bitch and he's a mamas boy
Post Opinion