Thanks for your insight. I too am going dark for the "self preservation" of me. It really hurts when the person you once loved starts seeing someone else. My STXH is dating someone too. I wish he would have put his time and energy into our M, instead of someone new.
The more you try to "hold on" to someone the more they want to get away. So I think the fact that your "ex" is seeing someone now, is not any fault of yours. If they are going to see someone else, I think they would have no matter what you or I did.
By you, distancing yourself from her, she can appreciate what she is missing. So, I think you did the right thing no matter what the outcome.
My STXH never liked being questioned about anything, even the most innocent question you would ask a friend, so I am definately giving him that. I have been a little nicer but I don't discuss anything about my personal life unless he asks and then I still try to be alittle short which is hard for me. I tend to be very wordy, if you haven't noticed. LOL!
Good luck! Let me know how things work out for you!
nikatnight
PS I woke up this morning praying that God would take away my feelings for my STBXH, if my STBXH will never be the husband he should be. I pray that for all of us that we are able to move forward if/when we need to.