What should I do about this problem?

I have made a question about this before but people said I need to be abit more specific.. Well here it goes. When I was in year 8 half way through the year this boy came into my cl as a new kid, It seemed me and him had alot of things in common and we got along pretty well, Anyway after about 4days of knowing each other he asked me out.. I said yes. So now our relationship has been going on for 11months but yesterday night we had a fight on facebook and he said some things that really did hurt me alot. It's like he was a total diffrent person when he was typeing and the things he said he has never said to me before, I ended up in tears and i was shaking. btw (we are both 14). I have never felt this way before and last night i was up till 4am - 5am trying to think of what to do I was feeling heartbroken. I went on facebook to see if he had replyed to me but he hasnt. I have no one to talk to about it so if anyone would like to talk to me more about it you could add me - toxic-cinda@hotmail.com ; I know this proberbly dosnt matter to anyone out there but it is really killing me.