I would really love to find the a$$hole who wrote the book for these adulterous WASs. There are so many of us here who have had to live this; it's unspeakable.
My x really did drive me crazy. I believed all of the BS he fed me - please, don't ever for a minute do that to yourself! Things will be different than what we hoped, what we planned, but we can make it great!
Please don't be surprised if your stbx's remorse morphs to open hostility at some point - as a whole, they are more upset that they have been caught than about anything immoral that they have done, or who they have hurt. My x is still angry at me, since I epitomize his failure - I am the constant reminder that he ISN'T the great and wonderful man that so many thought him to be for so long.