You're worried and uptight because the game has changed, and you haven't learned the new rules yet. I feel the exact same way! It's okay. Smile. Do something relaxing.
You're like me, I'm so paranoid to do anything that even vaguely looks like pursuing behavior because that didn't work before. But I'm betting your H could use some of that now--I know mine has been asking for more and more.
Now...the fear that he will go back is natural. But don't get so uptight around him that you backslide into all the annoying clingy/needy behaviors. Affection and some pursuit are okay, but there is a difference.
He's wearing his ring. You won.
I seriously doubt even though xOW has DR, she'll be able to get it. After all, it's centered around being less selfish and self-improvement and keeping the family together. And doesn't an affair run exactly counter to that? So don't worry.
Take some time to take care of yourself. Calm down. I know that fear, and it will be okay. Don't expect too much too soon from either one of you. Enjoy today.