Why does he do like that?

There is a guy in my tution i used to like once. When he knew that I like him, he started avoiding me and started running away from me. So I felt embarrassed and started to ignore him and avoid him too. Now I notice from the corner of my eye, that he and his bestie stare at me and his bestie smiles. I also heard this guy made my fun for seriously dumb reasons with his friend and laughed and again stared.
Why does he do like that?
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