He's been exposed... think of how you felt when you found out about his affair.. how many days did the shock take to wear off?

he's in shock that you found out. He will be in shock for a few days yet.

Don't sweat the mistakes, the truth is coming out.. tha'ts all that counts. When the lies end, the affair is over and they have a chioce :

1. Inherit their ugly affair and try to make it into a marriage - fat chance
2. End their ugly affair and work to reconcille.

Right now you just have to push the truth out so they only have those two choices left