You're asking for advice on how to get him back but what you really need is advice on how to move on (like your title implies). This can be ridiculously hard to do, but the first thing you need to do is something you're really resisting, and that is that you have to leave him COMPLETELY alone for three weeks. Don't contact him, don't look at his Facebook page, avoid mutual friends, don't look at pictures, NOTHING.
After three weeks of this, you'll be much more free of the emotional addiction you obviously have to this guy, and then you can see things more clearly.