Guys suck, no?
On a more productive note - my advice is, don't get clingy or annoying about it, but just make sure he knows you're there as his friend and stuff. Like Ryan said, if you give it time he might come around. He's obviously someone you care about, and I don't think just saying "fuck this" and throwing it all away would make things better for you.
You can't live in the past, because you've got to live for the future.