Sure. When you don't give a sh!t how your spouse feels and you are confident in your new relationship, that this new man is going to be a big part of your kid's lives, why step back? Keep moving forward. Keep the sleep overs. Minimize the contact with Dad as much as possible.
She's not shutting you out of their lives. And of course his reaction will be a concern, but that's her problem.
When people want out, THEY JUST LEAVE. I've seen it twice with friends of mine. And I've bee told by others who've been divorced for years, when they left, they left. Done and nothing the other spouse said or did made any kind of difference.
