So there's this girl I like, and she likes me back. We get real close almost whenever we're together and she says she loves that, but almost all the time she goes on about how fat she is. I'm always telling her she's not fat at all, not even remotely fat. She says she starves herself, I tell her she shouldn't because she's beautiful the way she is, but she still isn't convinced, and it's getting a little bothersome. What should I do?