What do you think about this situation?

Ok theres a boy that I like. I like him since september 2007. Hes goth. And at first he was so sweet to me. And we were like best friends. He would always hug me and kiss me on my forehead, cheeks and head. And one time he even kissed my hand. He was like the perfect guy, he is mature, intelligent, talkative, serious, nice smile, and I think its a bad thing to say this but he was the one who changed me and made me like this. And hes the one who introduced me to all the friends that I have today. Everything was so great in my life. Every day was perfect to me. But on halloween everything changed. One of my friends, Crystal, shes in seventh grade an Im in eight grade. She made me do a prank with her to him. It wasnt bad because I didnt hurted him or anything. But thanks to that he stopped trusting me and I know its my fault too and I feel so guilty. And thats not all. Once he found out that I was in love with him he completely stopped talking to me. He doesnt even look at me anymore! and its all thanks to Crystal. Now I have to live with that guilt every day. And now when Im around, he talks and all that but when hes talking to everyone in general he doesnt look at me at all. Like I dont exist. Like Im a piece of sh*t on the floor. And Sebastian( his best friend who is one of my best friends also) told me one time that he likes seeing me suffer. That he doesnt like me beeing happy. And I cant believe he said that about me. I mean, its him. The one I fell in love with said that he likes seeing me suffer. I got really down. And the insults continued and every day theres a new one. I've been living with this since that day. But now Im trying to forget about him.And its really hard for me. And Im also trying to let him now that I dont care about him either. Im ignoring him and I dont laugh at his jokes or something. And I try not to look at him and try to talk to every one and not to him. But a couple of days ago I tried to fix this situation and talked to him. But he gave me answers that leave you with a lot of doubts. And everything is the same. At least the other day when he talked he looked at me a little. But it feels the same. I still cant believe he changed like that with me. It hurts real bad. And Im sorry if this is a little too long but I hope you understand the situation.
And heres a photo of him.

well he doest seem goth! but I feel your pain! ok so here it is:

the real problem:
he is mad you pranked him and feels betrayed; therefore, has neglected you and insulted you inorder to ease his own pain. once he found out bout the prank he was influenced by his feelings and that is why he is acting this way.

how to fix it:
ok fixing this problem will be hard and can go two ways.
1. you cud talk to him face to face and if he gives you questions that make you woonder get him to say straight out answers. make sure he understands your point of view and everything.

2. you cud let him come to his senses, by not hanging around him to much. you cud try to give him some space and not seem to preassurful.

sidebacks to these fixese:
1. the side back to this is he cud get annoyed and it cud make him feel even worse bout you because you didnt leave him alone

2. it is going to be hard for u, but he may actually end up ignoring you for good! and think you are no longer interested.

I no that these fixes are hard and this is a very complicated sittuation but I think number 1 will work best. he will need some time but just let him no all this that you said in your question.

I hope I kinda sorta helped! please funmail if you need any more!
o and sorry if this is no long! =]