How can you tell that the other person is not interested in you?

Hello, I think it can be divided into the following points

First, the other party ignores your words, or even does not reply. The reply is simply "hmm" or something like that. Discourse.

Second, the other person always wears colored glasses when seeing you, always associating you with the person she thinks you are.

Third, you have nothing in common and it won’t make her interested in you.