Elder friend help me. I have to see this guy's face on a daily basis. I need some advice?

This guy rejected me. He is a type of guy who would stare at every new girls face and try to stick with them (I'm not being jealous but it is the truth). He teases each and every girl who would dress classy and smile at him ( every girl). So i felt very embarrassed when he had just thrown my feelings into the garbage can and treated me like a cheap object. I can't leave this education centre as my parents aren't allowing. I have to see this guy's face daily. I am not feeling well. Literally everyone in my tution is his closest friends. He and his group laughs at me when he makes my fun. He is actually dumb by brain and his girlfriend are just like him. I feel alone and embarrassed. How to deal with this?

Elder friend help me. I have to see this guy's face on a daily basis. I need some advice?
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