The conversation wouldve went like this if she was a loyal and honorable woman.
Her: Where were you ?
Him: Hanging out with my Kreundre'
Her: You know him?!
Him: Yes, we go back to like middle school.
Her. OMG!
Him: What?
Her: We use to date
Him: When?
Her: Before I met you. I'm sorry baby...
Now if she's a great girl, I think they can move on, but if she's not that great and they have a history of shaky incidents.