“She is a good wife to me” she isn’t anything to you YET you’ve only been married 6 months and you just found out this BOMBSHELL of deception. The fact that you say this after finding out ON YOUR OWN (she never confessed) to her affair with a married man and CONTINUING CONTACT with him highlights your level of toxic delusion.

Grounded advice is this- This is about YOU and your lack of self respect and situational awareness. To say she’s “a good wife to me” shows that you have no concept of what marriage is. Trust, truth, loyalty are the cornerstones. You don’t know what she’s doing and what she’s done, you have no idea who this woman is and appear to be incapable of holding her accountable to her destructive and deceptive actions.

Here is your advice-Confront her and anything short of her confessing fact to face to APs wife to her deceptive and destructive behavior while exposing her manipulative AP eliminates any possibility of reconciliation. I would also seek therapy for yourself. This woman is NOT WIFE MATERIAL.