I have never thought that it was cheating, but if it makes you feel uncomfortable where you think it might give the wrong impression, then it is OK if you don't say it. Where I live, it is quite OK to say it to anybody without feeling uncomfortable.
Your son is an ADULT and can make his own decisions. And NOBODY is deluded enough to agree with you and hasn't been for OVER A YEAR with the HUNDREDS of questions you've asked about the very same situation. There is NOTHING wrong with a person emailing, talking with, sharing food with, fist bumping, high fiving, being friendly with, going fishing with, or even saying "Happy Birthday" to a married person of the opposite sex.
It is not cheating and your obsession with this is the reason your wife left you. GET HELP. Peace out, girl scout.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.