Please allow me to add my name to the list of "guilty" ones. So refreshing to find a thread where we can all take the blame together!
My situation is a little easier than others, because my ex is consistently hostile to me. I don't have to deal with the push/pull stuff. I evolved from Thanksgiving through New Years from a place of hoping sometimes for a different outcome, to realizing that I cannot be with this person and be healthy.
If anyone tried what your friend did with me, I would be tempted to go NC with them. Just sayin'