LostGirl, if you want this to work, you have to be more positive about the situation. You got the guy you want back. He didn't cheat on you. When you broke up he did the healthy thing and moved on instead of pining away for you. These are three very positive things.
Now you just need to find it in yourself to trust him. You actually have no reason not to, since he didn't cheat. Like the other posters said, your jealousy will eventually drive him away if you don't nip it in the bud now.
And stop going to his website and reading old posts. Leave the past in the past. He's with you now hun...enjoy it!