I think that especially once someone tosses aside a marriage for divorce the first time, it's extra hard for them to respect marriage the second time. Because after all, if he suddenly had respect for it NOW, that would mean that he did something "wrong" the first time. Easier for him to just "not believe in marriage any more".
But that's just the bad news. The good news is, now hopefully, you'll feel justified enough to finally let go, stop waiting for him by the door now, and go be with someone who deserves you.
You've done all you could, and more than most would. He doesnt care. Time to drop him.
PS: you have no reason to feel guilty for calling him a "man-slut". He IS one
My current status: june 2006. Wife ran out and filed D. Finalized Jan 11, 2010, after 12.5 years M. 3 wonderful sons caught in the middle