I’m at a loss. I’m embarrassed. I’m upset. I’m disappointed. My boyfriend’s mom doesn’t like me. At all.

My boyfriend and I went to school together and have been friends for 16 years but we got together about 4 months ago. As soon as we got together, he told me how much he actually loves me and I felt the same for him. It was amazing. His mom liked me a lot! We talked every day and we got along really well. My boyfriend has a 2 year old daughter from a hook up after high school. He thinks I’m good with her. The first time his mom got mad at me was when we took his daughter to the park without her. She just acted standoffish. She always has to be involved or have a say in where we take his daughter which I think is so stupid! This time, we picked out a new car together. We both know we’re moving fast but we’re excited. I posted a picture on Facebook of the car and said “We got a new car today!” She commented all kinds of hateful stuff and then messaged him and told him it was stupid of us to do that and stupid that we call it our car. His name isn’t on it but we both use it. When he saw her again, she told him that I’m manipulative because I’m not on birth control and because I post on Facebook baby videos and stuff like that and that she was only talking to me in the beginning to be nice?? Wtf. I saw her on my boyfriends birthday and tried to talk to her and she ignored me. In person. 😩 My boyfriend was with her and his daughter yesterday. Him and I got into a text argument and apparently she could tell because she deleted me off of Facebook. 🙄 what do I do? How do I solve this?