Regardless if he is shy or not, he is probably looking for postive actions from you. Do you look back at him and smile? Maybe wave a "come here" hand at him? Do you ask him for help with your homework? Ask him to sit next to you when you're alone?
No? Well, if you don't act he's going to lose interest. I won't waste my time if a girl isn't interested in me.
More clear signals would be: you say he has nice eyes, tell him he's smart, or good at sports, or something. Tell him you like him, for more than a friend. If you don't make it clear, he will assume you just want to be friends. So, communicate! Or simply send him a note that says "I like you more than a friend and I would like to get to know you."
I have a long time interest in psychology, specializing in relationship dynamics for 30 years.
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