SoSorry,
I've read posts by both you and your husband and I empathize with everything you and your whole family are going through now. Being 8 years out from my divorce and about 20 years out from my first D-day and separation, (yes, you read that right, my first D-day was October of 1994 and I didn't divorce until 12 years later), and as a BS I have some other things for you to think about. Things that may shed some light on how your BS may be feeling. I also could be totally off base and full of shit, but hey, it's another perspective.
After the first D-day in addition to being hurt, angry, humiliated and very pissed, I was also filled with anxiety about the future. My ex, like you, was in a much better financial position than me. I was afraid that he would use that to make my life miserable and try to bribe my kids away from me with the things he could buy/do for them.
They were young then, 11, 7 and 4, still impressionable, and we live in an affluent area where big houses, lavish vacations, expensive cars and homes at the lake are the norm. I was afraid the lure of that lifestyle would be attractive to them. I was also afraid of any new girlfriend/wife he might introduce into their life. Would they like her more than me? Would she be more fun to be around than me? God forbid, would she be younger and more cool than me? How would I manage financially? How could I even consider dating with three young girls in the house? Who could I trust around them? I saw a very scary, lonely and dismal future for myself.
Then on top of that my ex had an air about him like, "well I did something bad, I said I was sorry, a lot of people do it, can we just get past it and look, I'm here NOW, aren't I??"
I mean, was I just supposed to suck it up and be ok with it? Ummm, no. It doesn't work that way.
What I wanted him to do was to just shut up and leave me alone. I didn't want him to talk or do anything to try and make things better because there was nothing he could do or say that would or could make it better. But there were things he could do that would prove he understood the bomb he had set off in our lives.
Like--see the kids on MY schedule, make sure that I was not inconvenienced by anything he did. Make sure that I would not suffer and additional financial, professional or social hardship due to his behavior. I wanted him to not drag out divorce issues and to treat my attorney with respect. I wanted him to leave my friends and family out of it and respect the fact that they wanted no part of him. I wanted him to keep his social life private and keep our kids the hell away from anyone he was dating. He was to keep any "poor me" nonsense a bazillion miles away from our children. He would be honest with anyone who asked him what happened--none of this "we just grew apart," crap.
Of course he didn't do a very good job with any of it. As a result, I have not seen or spoken to him in nearly 8 years. Although reconciliation was not even a possibility for us, if my ex had conducted himself better after discovery of the affair, during the divorce and after, maybe I could at least be civil and in the same room with him. Now there's not a chance of that happening.
In your case your BS seems to still love and care for you and you for him, but divorce may still be in the cards. However, people who divorce remarry all the time. It may seem counterintuitive but if you want this man and a future with him you may have to give him up for the present.
Kill the drama and keep to yourself, lay low and spend time alone or with your kids. If people are talking about you or want to talk about what happened, go silent or pretend they are invisible. Refuse to be the topic of conversation any longer. Surely you and your spouse are not the only things going on in your community. People will move on to the next story if you let yours burn out.
Quit trying to read your BS's mind because if you could, you won't like what you see anyway. Don't try to make him feel better because you can't. Too late.
Guarantee him access to the children whenever he wants, however he wants. Maybe he should live in the house and you could come and go, especially if you don't work outside the home.
You also have to take care of yourself. Ok, you did a bad thing, you're not a bad person. You are hardly the first person to push the envelope, be spoiled or to never have heard the word, "no."
But you have to be willing to do the hard stuff now. You have young children, you're going to want to get your head together and know who you are and what you're about before you have to start dealing with their pre-teen and teen-age stuff. As so many others have said, time to put on those big-girl pants and get busy.
You are SO young and have your whole life to do wonderful things. Don't let this set the tone for the rest of your life. What you're going through is a challenge but in every challenge is an opportunity. You are probably way stronger than you think you are. Good luck.