I have a question! Hey YOU! Yes YOU! Would you like to answer? Thanks :)?

So I like this guy, his name is"Bob". And it's summer, so I can't see him. Often. On facebook, I chat alot with him, but I always start the convos, and he always logs out randomly and nvr gets back on. I get the message that he doesn't like me, but I can't stop liking him!!! How do I stop!?!?!