On another note, I found a really great article on infidelity. I am not sure one is supposed to post links, so I will just say that it is in the October 2017 issue of "The Atlantic". It is a tough and painful read for the betrayed spouse/LBS - and it was for me - but it is well worth it. If you are a LBS who is reeling from an A, I urge you to read it.
