I would assume that your husband will eventually get worse, as his ability to "capture" attention wanes with his age. That he was at two affairs with two different sweet, young, things could mean that his or their "attention span" isn't jiving too well. Too, older men playing games like his get to be a known turn off for most "adults" and I don't think he'll get much stroking from inexperienced, younger people before long.

I don't think he understands that he's lit fire to his own rear end and is burning his own bridges. That's the only reason I'd feel sorry for him. But if he doesn't care enough about himself to go/stay in therapy then I'd see no reason to even feel sorry for him.