IB, You are making progress in your home! Don't over do to where you injure yoruself.
As for your xh, the more your children try to tell him about the third person, the more determined he will be to put her in the middle of everything.
What would you like as a new vision for yourself?
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.