He probably just wants to hide his secret. If he does like you, then he's probably just scared or waiting for the right moment.
long story. he likes you prob. guys are dumb like that
It's to shy or nervous to admit it, or he wants it to be a secret
Im no expert, but it probably means he likes you. (Or who ever he stared it) (:
he is liking you
it mean that there in liking with you
Their friend may have already liked you or is jealous
by how he stares at you
when he talk about her alot or stares at her alot
It could in fact be a lot of things, maybe he was thinking something offensive? Or maybe he was denying liking you in the first place... Its one thing you can never be sure of with out asking them. Maybe be sly and get a friend to find out for you.
well its always good to get into the friend fase first! so you wont scare him straight away. just slowly get into that type of topic of like what do u like in a girl or "tease" him about liking someone. just slowly get him into that crushing moment and then the moment when he stares in ur eyes admiring you tell him u like him!
it is just looking. Or it hears or sees something!
"and shows signs of liking"It seems you answered your question yourself there. If he shows signs that he likes you, go for it.
You can know if he stares at your face and stares into your eyes when you two talk. If he stares at "other" parts of your body get away from him because he is a creeper and a pervert. You should then think if you really like him as more than a friend, if you do then tell him, if you don't then don't let himself make a fool of himself and just tell him (as gently as you can).