What sort of things do guys do if they like a girl?
They would probably try and look at you and sometimes shy guys find it hard to stare or even stare while a girl notices that a guy is looking. He would most likely talk about who he fancies and he might also want to talk to you and maybe ask you out. Some guys might look nervous around you and might show some body language. They might try and impress you by what they are good at doing. They might fight over you. He might smile at you and be very friendly. There might be more signs but these are the ones I think would show a guy that might fancy you.