On this one--I share some ongoings--to see if others have seen similar behaviors....
In my case, my W and I appear to be getting along reasonably well now... and then after a week or so went by... I want to remind about the seriousness of the event--even though she say that she will not let me down.... when I bring up the idea that an A easily can result in a divorce... this seems to get her to rethink and talk some more... so we do not sweep under the rug... also I learn more about what she was thinking or "not" thinking at the time.
Before I read about WW, I had no idea that a W could just drift away, isolated, alone, or lost, and make poor decisions... and then maybe snap out of it (or the red flags like folks have suggested)
H (me) 52, W 42 M 15 D14, S12 PA June and Sept 2016 Found out Sept, confronted Oct NC with OM since Oct, remorseful Dating since Nov