It's time to show him this thread so that he can see what we can see, which is that you've got more than enough grounds to divorce the deluded twunt for unreasonable behaviour.
I've got no doubt that you and the dc will be considerably better off in every way without this self-centred, self-absorbed twat in your lives.
'Always sorry, always says he wont do it again'? Yeah, right. Wake up Mr Crocodile - it's time you realised what a deluded, churlish, prick you've been.
Your wife and your dc deserve a lot better than you.
Either shape up or ship your sorry arse off to the woman who left you in her wake years ago and, despite the fact that she's continued to toy with you and use you to boost her ego, will have no compunction about doing it to you again whenever it suits her.
You're her yesterday's leavings, honey, and if you continue to carry on the way you have been doing, you'll be Croc's too - and not before time.
What a sad dish of leftovers you are, Mr Croc. Knowing the needless hurt you've caused your wife and, by default, your dc, how can you even bear to look at yourself in the mirror?