I don't have any advice for you on how to face the cheating spouse. Mine left within a day after I finally uncovered the total truth and moved in with his OW where he remains to this day.
All I can say is that you have to handle this in the way you know you can live with. If it makes you stronger and better able to enforce your boundaries to call him on the carpet regarding his lies and disrespect, then do it. If it makes you feel bad afterward then it probably isn't the way you should be going about it. There is detatchment and then there is loving detatchment. I hope you can find the balance you need.
I hope you are having a good evening all in all.
T19 M15 S19 XH47 M43 bomb12/4/07 PA5/07 S12/26/07 D final 11/17/08 Back together with no defined R 05/2010 confused....to say the least!!!