Is it because our constellation doesn't agree with girls singing?

Your girlfriend's idea is naive. Whether two people are suitable or not depends on their personality. Her three-view girlfriend actually takes the constellation as an example, which shows that she is naive. You have to think it over. Is it because she wanted to break up with you long ago, or does she really believe in horoscope books? I think your girlfriend may still be young, otherwise she should pay more attention to her feelings rather than believe what the book says. If you think she is very nice and want to be with her, I think you should guide her well.

Girls are actually loveless. If you give her more care in your daily life and let her feel your true consideration and love, I think once she feels safe enough, she will no longer believe in the crooked doors in these constellations. But there is another possibility, that is, she wanted to break up with you long ago, but she never said it, and now she uses the theory in the horoscope book as an excuse.

To confirm this suspicion, you should observe her more and see what her daily life is like. Are there any members of the opposite sex close to you? Is she still as enthusiastic about you as she was when she was in love? Since she didn't do anything wrong, I think you can read all her chats with others, but you need her permission to read them.

If this conjecture is wrong, then you should have a good talk with your girlfriend. You want to continue with her. She will be the mother of your wife and children in the future. She must grow up. If you don't pay attention to your feelings and always believe what the book says, then I don't think she will be a good wife in the future.