There's a girl in school, she lives in the dorms and I live close to the university, she is always looking at me, and when I am behind her she looks back at me. We have all the same classes. One day we were talking, and she said she was good at ping pong. So I asked her if she wanted to play me. She said she was free anytime that I wanted to play. So I asked her If she wanted to play that night. She okay, but she never showed. I asked her the next day what happened, and she said she went to look at a car with her friends. I took it as a rejection, but then she still keeps looking at me, and when I look back she looks away fast. Advice?