We REALLY need more info here. It sounds to me like your H has been having an EA for 2 years and that it turned into a PA just 6 months ago. You found out when? 6 weeks ago? When you filed for a D?
How did you find out about the A? And what did H say when you did find out? He obviously wasn't denying it if he admitted to physical relations with this woman.
How did he take you kicking him out?
Does he still see your 3 kids? Do you have a chance at those times to interact with him? How does that go? Do you act your best self?
If your H is involved in an A and right now does not want any part of your M, then you're going to have to focus on being his friend, just casually, GAL, laugh, smile, and use HIS love language in a subtle way when you interact on any level with him. Be cool, calm, composed and the picture of beauty, serenity and 'perfection'.
