How can I get over him?

My boyfriend broke up with me about 3 weeks ago but I'm still not over him.. apparently it was because I never met him which I guess is true.. but I was scared that I would bore him.. We use to text everyday.. Even on the day it happend he was trying to prove how much he loved me.. but I was horrible.. I miss hi so much and now he acts like we were never together.. I cry everyday and when I see him in school my heart beats so fast I feel like I'm going to die.. I'm scared of him but I still want us to be together.. how do I move on he doesn't care but I can't stop caring
How can I get over him?
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