Mom is very picky about her boyfriend.
It seems that the psychological distance between mother and child in this family has not been separated, or that the child has not been independent from the family. If the mother-child relationship is too close, it is not easy for a girl to compete with her for her son's love, and she will unconsciously criticize and accuse her son's girlfriend. Not how bad girls are. The key lies in the son. Can you know why the mother accused her girlfriend and told her not to interfere too much? If you can make him understand, it's not your fault, it's mom's jealousy. But you can't blame your mother like this, it will make your boyfriend embarrassed and even more unacceptable. Leave mom slowly for a while, and wait for an opportunity to make him understand. If he is still mother-centered, it is enough to have such a mother-in-law after marriage. At the same time, it depends on whether you can bring him closer to you psychologically than your mother.