MOST important, while your spouse is cheating, I would'nt even reccomend you SPEAK with her AT ALL... tell her until she has ENDED contact with OM and is prepared to attend a family therapy session you do NOT wnt to have have CONVERSATION with her.

This will inevitably invite her PURSUIT.

IGNORE her... she will provoke you into fights, she will sling insults, and throw negative thoughts at you like an artillery barrage... STEP OUT of the DRAMA... just sidestep it like she has a disease.

KEEP that position until she's changed her tune.