My boyfriend always quarrels with me because of a little thing, and he won't give in. What is this performance?

That means your boyfriend is not mature enough for a long time, so it will happen. And a little male chauvinism. It will be hard for you to have such a boyfriend. It used to be the same, but think about why you liked your girlfriend so much in the first place, and then think about your girlfriend's goodness. She is lovely, tolerant by nature, and not as grumpy as before. If your boyfriend still loves you, talk to him and it will change.