I used to be in your shoes

EX got OW but didn't want divorce. I forgave him and gave him a chance. He kept in touch with OW for 6 months and finally told me he still wants to see her and keep in touch...

If you were my sister, I will suggest to focus on yourself and your kids, and try your best to protect yourself.

Get a strong attorney! If you want to save money on attorney, you will lose more!