yeah I hear what you are saying - I guess the thing is, I never asked them if she had returned to an ex because it never dawned on me that she might have done that - completely off my radar. And I never mentioned she had recent ex that made that scenario highly plausible.. .. I never mentioned that the ex was always there, calling her, crying on her shoulder while we were dating, etc.
Still, these guys surely know about the likely scenarios. But, they could have said she found someone new.... they were specific that it was someone from the past that re-entered the picture....