If you can answer it I will feel as if I have met Jesus..?

hmm...I liked one guy...2 years ago he was about to say that he loves me but due to some network problems things did not go as I wanted and we had to close the chat in between..the next day he was ok and said that we will again chat but slowly as the time passed(we did not chat for few months after that chat)he started to hate me and now he hates me like anything..wot should I do?I keep on thinking about him .which are now troubling me.I can not sleep and study properly..I wanna get out of this whole stuff !!I am 15 and he is my classmate.