@Eddieharvey,
You are 53? but you have no understanding of why this man would want to have a good relationship with his wife, even for the sake of the kids. Like I said before she is always going to be a part of his life, as the mother of his children, no matter how much you might not like that.
If you can't get past your resentment, jealousy and mistrust then there is very little hope of your relationship working.
Do I think you should stay with him? Probably not, but more for his sake than yours.