My 10 year old daughter does not like my boyfriend. What do I do?

It has been about 7 years since my daughter's father and I have separated. I have had boyfriend's in the past but not as serious as my boyfriend now. Things were great in the beginning and it wasn't until we made plans to move in with each other that my daughter began to dislike my boyfriend. He has done nothing but try to be nice to her. She has started to throw temper tantrum saying that I love him more than her and that she hates me and wants to live with her father. I don't know what to do anymore because I love both of them. I just want us to be a happy family, is there hope? I just don't understand because her father has a new girlfriend and she loves her. My daughter tells me that I have to choose between her and my boyfriend and that she does not have to be around him if she doesn't want too. It has even gone as far as her texting my mom and my mom coming to get her and told her that she will call HRS on me if I have her around him. I have done nothing for her to call HRS. (neither has my boyfriend) I work two jobs and have a nice place to live and take care of my daughter. I feel as if I should not let her rule my life because I am the mom but she makes me look bad and tells everyone I don't love her. Sometimes the stress is so much that I told her she can live with her dad if that's okay with him. I don't want to give up on my daughter or my boyfriend but I deserve to be happy too! So stressed out...... :(