For the love of ALL of the God’s OP - this guy is a copper bottomed, self-absorbed, selfish, duplicitous, spineless
amoeba of a man. Each time you add more he sounds
worse and worse! Please stop trying to understand why he did X and Y - he’s a manipulative user who is able to deceive and compartmentalise very easily, over a
long period of time. Unless you have those toxic traits or the beginnings of some sort of personality disorder then you will never be able to ‘understand’ why.
Some aspects of your marriage and your husband sound a little bit similar to my ex. I don’t want to sound harsh but stop tormenting yourself over the details of what he said etc and focus on the overall picture:-
He believes he is superior to you - his words and deeds show this very clearly. He believes you are lucky to have him and that he has you over a barrel, so essentially you’ll just have to put up and shut up.
He treats you with contempt - at best he sees you as a child-rearing, house-keeping ‘wife-not’ appliance. As an aside, how does react of you are ill? Does he care for you and willingly take over all child related stuff? Or is it an irritating inconvenience for him that the wife-bot has malfunctioned?
He is clearly verbalising that he has chosen to remain out of duty, for his image as a husband and father. He wants to ‘uphold the vows he made’ so he looks like a good guy, despite it being so ‘hard’. Are you willing to live your life with a man who tolerates you rather than cherishes you? From my personal experience it does a hell of a number on your self esteem, until you become a shell of your former self. It’s 100% not a path worth trying.
He has clearly shown that he thinks his behaviour is all in the past and now the problem is going to be YOU and your inability to sweep it under the carpet and carry on as though nothing happened. I expect as time goes on he will be angry when you mention it or become upset and he will throw it in your face as your weakness and lack of commitment/understanding/whatever.
I guarantee you will never trust him again. And it’s likely he will cheat again and next time you won’t find out about it because, guess what? He’s learnt how to cover his tracks properly now. He won’t make the same mistake next time. He’s clever and sneaky and he’s not your friend. You’ll either need to spend the next 10/20/30 years checking up on his movements, going through his pockets for evidence, pouring over his bank transactions etc, or make a decision to simply not care and determine not to be bothered about his ‘indiscretions’. Which of these options will drive you the least insane? Which will be least damaging to your self worth and mental health? Won’t you always be waiting for the other shoe to drop? The longer you stay with him the more ground down you will become, constantly circling the plug hole until he decides he’s tired of trying to ‘do the right thing’.
Honestly, there’s so much wrong with this man and this situation that I really don’t think the question should be “How do I move forward/save this marriage?” but rather “How do I save myself (and DC) from this awful marriage and get out as quickly and painlessly as possible with my sanity still intact?”
I have huge empathy for you and wish you happiness. But honestly there is no happiness left for you with this kind of man. Cut your losses, move on, find a new happiness.