I joked with others that I had a crush on her for a long time, and she believed me. In fact, I don't like her. Now she sends me text messages every day. What should I do?

It depends on what kind of personality the other person is. If she is a little fickle, you'd better keep an affair with her. If she is serious, you'd better tell her what you really think! In short, you don't have to like others anyway, but please try not to hurt others' business!