Boyfriend's Family

Hi. I'm in a situation where I don't know what to do and I can't stop crying. My boyfriend and I have been dating for a year now and I am pretty close with his family. I always got along with his parents and sisters and I always thought that they never had a problem with me. Over the past few weeks during quarantine, my boyfriend is missing me a lot and he has always been very sweet and caring. He's a fragile and sensitive person who wouldn't hurt a soul, but his mom and sisters have always treated him badly. They tell him to shut up no matter what he says, and tell him he is dumb and stupid. They put him down and make him feel like he is doing everything wrong, making his self confidence depleted. I'm the only person who is there for him and treats him like a human being. Since he has been stuck in the house with them for so long in quarantine, he facetimes me and always talks about me to his family. I never thought that his mom had a problem with me until he comes to me every once in a while saying he's frustrated with his family. I'm the only person he can talk to. He said that his mom always tells him that he depends on me too much and makes all of his decisions revolved around me. Next thing you know, he says that his mom thinks that I am forcing him to do things that he chose to do himself. He left chocolates on my doorstep and he will do things for me that are so sweet without me knowing. His mom thinks I am controlling him and now she says things about my mother. I told my boyfriend about some of my problems and mental health. My mom and my boyfriend have a close relationship and he always texts her thanking her for giving me life. He texted my mom because he was worried about me and sent a paragraph. He decided to show his mom the paragraph he sent, just for some advice. She started talking about my mother, saying that she was drawing my boyfriend into my problems and personal life, when in all reality, he was being an empathetic human by his own choice. Now I'm crying, because I am thinking about how I am damaging his relationship with his family and they don't like me. I feel guilty because I love him so much, but I am debating breaking up because I don't want his family getting into his head and I don't want him to be too dependent on me like his family assumes. I don't want to break his heart though. I'm all he has, but I feel like I am doing more bad than good. I am so lost.