Please listen to the excellent advice.
Don't trust this man at all, about anything.
It's hard, I've told you my situation so won't bore you again, but he does not have your interests or those of your kids at heart.
You might think he won't screw you and the kids over, because facing that hurts like hell. But he will. His priority is his new life, and probably planning that new life with OW.
You absolutely must get the very best lawyer you can. If you think your current lawyer could do better, fight tough and find a better lawyer.
You need to get the very best financial settlement you can. Don't talk finances with him. You need a lot of equity in the house, child support and spousal maintenance, and a deal on his pension. I got it, you can get it. If you live in Norfolk, pm me and I'll give you the name of my lawyer, who got me an amazing deal.
Forget him doing the right thing, he won't. You no longer know the man he is.
I repeat, he isn't your friend.
Good luck, get the best legal help money can buy, for you and your kids.
You have to get tough, fight him for everything, and then some.
Good luck, stay strong, take your time, and please, stop talking to him about finances.