IDK how that all works and I think I'm quite happy to never have to deal with that with stbx.

I DO know that I am great friends with past GFs. I certainly would never want to be M to them. Certain quirks I know about them, I suppose. The "reasons" why we broke up.

Then there's those people that I never had a R with, but just would never entertain being in a R with, just good friends. They're not "my type"... *shrug*

I think that the past hurts will keep us away. I also think that it will forever remain a choice to be friends or not with an X.