I think there may be a few points.
1: Her mother really has a personality problem. Not very talkative. Not enthusiastic. It's strange to be with you.
2: Your boyfriend's temper may be a little heavy on her mother. I won't coax you.
You were right to break up. You, nobody loves you. Your boyfriend who solved the problem with you.
4: Join the next boyfriend. When you meet such a mother, you can communicate with them as much as possible.
All right. This is my opinion.