How would you feel if your partner had a work wife/husband?

I’m at work and this man apparently is married while fooling around with another woman that work with us. Her kids be saying to us that he loves her and that he makes her feel different. Her daughter comes here to the office after her job. One of my co-workers that was sitting across from me at the office said that if his wife finds out about this, she gonna be pissed. when the guy came into our work area, I asked him are you married? He said the woman is his work wife. the woman kids, her, and her family don’t know he’s married according to him. we seen his wife so many times.

How would you feel if your partner had a work wife/husband?
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