I have namechanged for this.
I split up with my exh last year. The circumstances were pretty appalling really. I lost about 2 stone. It was the worst time of my life.
I recently discovered that a friend I would consider to be fairly close, though I don't see her very often due to distance, has not only remained friends with him on Facebook, but has added a few jolly little comments to photos he's posted up of our children. She's happily married, so nothing going on. But I feel so let down by her. I don't really know if I should say anything or not. She's one of the few people who know the whole story behind our split, and without going into detail, it was particularly upsetting and frightening.
Do you think IABU to have expected her to defriend him and say something to her (she lives miles away, would never meet him, and was only a friend through me), or should I just accept that adults can make their own decisions/ she's probably not as good a friend as I thought, and let it go.