Her sex life is her own business, though. Her ex seems small-minded and petty.
I'd agree, if not for the mention that she was sleeping with people related to cases. That's a major conflict of interest, which is not good.
Considering they were married at the time and in the divorce proceedings she's brazen enough to accuse *him* of cheating, I don't even think it's petty if none of the people she slept with were related to her job duties.