so if a guy gets shy around you, does it mean that he likes you?

that a good question. and the answer is simple, no

many guys do get shy when they like a girl, but sometimes its how they are with any girl.

some guys get shy on ugly girls, so they get nervouse because they dont want to send the wrong message to the girl thinking they like you

but one thing you can know is if he get red

i mean, does his face blushes?