The girl I like left me a message saying: If what you gave me is also for others, then I would rather not. It's not terrible not to get it, but it's a joke not to stay.

This is the common idea of ordinary girls. In their eyes, if you don't love, you just say that breaking up means that you can't be in the same boat, so she may mean that you treat others as you treat her. She can't feel your love. What she wants is pure love. You are unique to her. She should be a girl with strong emotional possessiveness.