Have you ever thought at first that she had a crush on you but you didn't?

What are the signs that make you know and realize that she has a crush on you? But on the other hand, as time goes by you realize that you have been misunderstanding her and the truth is that she actually doesn't have a crush on you. What went through your mind when you realized that? How did you react next?

Have you ever thought at first that she had a crush on you but you didn't?
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