I got caught up on your sitch, and I feel for what you and your kids are going through.
You have received a lot of excellent advice, as I fully expected you would. There are many kind and compassionate people here with much to offer.
From what I read it sounded like you have contacted a L about your legal rights. It also doesn’t hurt to see one or two other Ls to ensure all questions are answered. I hope you do not need to use this knowledge, but if this goes sideways you don’t want to be scrambling to get information. As someone said to you earlier, it would be the most important financial decision of your life.
Looking at the conversation between H and the kids, his involvement with OW, and his cake eating I think some boundaries are needed in regards to disrespectful behaviour, visiting, and sex - IMHO.
I was glad to read that your kids were supporting each other. I found that my children have grown closer to each other after all this, I expect you will see the same.
Keep working on detachment and try to quit taking the bait.
Your doing great Meg.
xoxo
Feelings are fleeting. Be better, not bitter. Love the person, forgive the sin.