The triangulation
(read definition) aspect is pretty weird. The way it plays out is the main character bad mouths about someone else, gets sympathy. Then badmouths to the person he was badmouthing to someone else and gets sympathy. So who will he contact to badmouth about previous gf? After he gets done badmouthing you to her to get sympathy. Is having the triangle "too good to be true" and unsustainable?
My family was (is) that way, pick a scapegoat and badmouth them behind their back to feel superior. Very passive/aggressive and dysfunctional.