Tiger, I completely understand ALL that. I have moments like that too, but they're fading. I had a bad weekend this past weekend where I found myself all cooped up in my house, canceling plans. I need to just keep busy; just keep moving... for now.
And yes, therapy really does help. Just talking about it with someone who gets it is such a relief.
Just remember, NOTHING can help him change. He's bound to this earth forever in a meaningless, hollow existence. Would you ever want to go through life like that? HELL NO! And no matter what his next relationships look like on the outside, you KNOW what she's going through or will go through. I know you know all this, but it never hurts to keep reading it.

(((HUGS)))