Well said, Angelica. They absolutely are immune to any kind of love, affection, helping-hand, voice of reason. They do eventually come out of the wreckage and see what they've done. However, what I know now is that this doesn't automatically mean they want to reconcile. I always thought once my H woke up from his horrible replay, he would run back to me, asking for another chance. That is not a guarantee and it didn't happen in my case.
Sometimes their guilt wins out.
Most of us really marry only once. First love endures, even unto our dying day. And we never really divorce.