What does it mean when a boy is talking and when he sees you he stops talking and stares into your eyes and start copying what you do does he like you but he has a girlfriend?

He totally likes you, but he doesnt know what to do, like..

he doesnt know if you like him, he doesnt know if he should

tell his girlfriend he likes someone else..

I can go on and on.. If you like him, tell him, he totally likes you.