Draw his attention to you

Just do little things to make him notice you, its not hard.

-Example: In school or work place just on occation take his pen or whatever, he's forced to put his attention to you, hence start to notice you more.

-Warning: Dont be anoying! its great to do it once or twice on occation but if you become a nusence, he will regret seeing you.

-Good luck :)