How to know if he likes me back?

Well if he liked you he would be extra careful around you while speaking. He would stare into your eyes allot. You might as well chat talk to him while he is there. Pulling him to one side to chat would clearly send signals to him your interested in him so be aware of that. If he is trying to rush by , seems bored then he unfortunately does not have a crush , but if he stays longer than expected then there is something