This boy found out I liked him and know he's acting like a B I T C H.?

Okay, so I told my friend about 2 months ago I liked "Kameron" I told her not to tell anyone but, next thing I know it's out the next day I was furious with my friend but I got over it now I know just not to tell here any more secrets anyways once Kameron found out that I liked him he started ignoring me at first I thought maybe he's shy but then after a while he started talking to me again but not like how we used to. He's always calling me dumb and laughing at me when I mess up on something he's always criticizing me and bring racist. He's said things that have made me go home crying. We used to be real good friends we sat by each other in almost all our classes we talked alot joked around he helped me with school work but now he's a complete a s s hole. We hardly talk unless he's insulting me, the day he found that I liked him he immediately moved his seat and sat with this other girl. And now he's always talking about how he's gonna get with her and That's she soo fine. After all this I HATE him. I don't consider him my friend and I don't know why I liked him he's ugly! I'm still curious why he's acting so mean to me when he found out I liked him.