This sounds really unhealthy. I'd either kick him out ( he's a big boy, he'll deal with it) or you move out. You really can't move on until there's physical space between the two of you. Yeah, the economy is tough and all that, but what price your peace of mind and closure? Of course you can't control his emotional state, but you can control what kind of environment you live in and who you choose to be around. Prolonging it because he has issues getting over things will just make it worse for both of you.