I still struggle with how my WW told me she can't live without me, that she wishes the affair never happened and she loves me with all her heart during a tearful conversation on Jan 1 and then a month later has decided she wants OM. Can a person really flip like that in a month when nothing happened during that interval to make her not love me? My wife never expressed any doubts about our marriage until late January.
Yes, they can flip. One has to wonder if part of that conversation was cover. She may not have expressed doubts, but they were there.
There are moments in this life when you are so confident in the rightness of your actions, that not even for a second do you consider the option that you might be wrong.