Looks like you have got things under control. I am in much the same place. Every now and then W will get upset and hit me with a request for settlement , that used to see me weaken and "play along " to settle things. Now I just agree and dont react. So she drops the tactic and goes back to very friendly.
I think there is an underlying truth here for a lot of us here on the board. When we decide to try and save our M we realy go it alone , with the help of our friends on this board of course. In the course of this process we actualy learn to live with ourselves and learn that life can still be very rewarding being single and without having a partner. This is a very important lesson. The WAS on the otherhand often is involved with OP and in the case of my W more than one OP and do not know they if can lead a happy life by themselves . Therefore they seem to still be on the rollercoaster . I think you have stepped off it ( I know I have ) and are on the platform watching , seeing it for what it is . The rollercoaster may go up and down but in the end it gets nowhere.
Good Luck Sunny , I know things will be good for you going forward.