I too faced the struggle about OM and my daughter. He desperately wanted to meet her. (I'm putting in the past tense because I think the A ended yesterday - we'll see).
I very much wanted to protect her from that, but in the end, I realized that I ultimately can't protect her from the truth. When my W told me on Sunday that she was going to invite OM to move back in with her, I was prepared to let him see my D. I believed that my D would make W completely aware of the difference it makes for kids to be with their parents.
Your kids would be your best allies (not talking about recruiting them or coaching them, just natural things that they would say and do). It could be the thing that shocks your W out of it.
The LORD is near to all who call on him, to all who call on him in truth." (Psalm 145:18)
