As for ex - he seems happily married so far - she seems sweet (remember, she's not an OW, she came later) if very little-girlish. I feel kinda sorry for her, but hope she will care for him in her old age. Their carefree life is starting to become more serious though - her mother died this year and her father is apparently coming to live with them for a while.
I know a lot of people here long to hear those words, that they regret the divorce. I really DON'T want to hear that from my ex - I would rather he go happily along his way, and treat our kids better because of it, than turn into the depressed guy who realizes what he messed up. I have a clean conscience that I did everything possible to save my marriage, and I definitely don't want him back in my life at this point.