I never expected it to get this bad…

My boyfriend dumped me D’: The one person I could always count on to love me no matter what happened. He said it wasn’t me though. He’s been having some personal problems and said he couldn’t deal with a girlfriend. I’m so confused:/ this came out of absolutely no where. Just Monday he was all happy talking how he couldn’t wait to see me this weekend, and then he dumped me Tuesday. On Tuesday, when he dumped me, he wrote on his myspace “good day”. Well that made me feel awful. Then, today he looked completely miserable. I’ve never seen him so upset. I’m so confused. I don’t know what to do. I want to S.I, but I don’t want to. I have enough scars to remind me of him, and if this isn’t really about me, I don’t want to hurt him more, and that’s just not who I am anymore. I have no idea what to do. Please I’m desperate, someone help me..fast.