It depends on how close of a friend they are and how much in love they are. Sometimes "the messenger" is the one who gets shut out once the dust settles. Remember no one wants to play the part of the fool and therefore they will do whatever is possible to (give their mate the benefit of the doubt).
If you are unsure who your friend would believe you are better off letting them find out for themselves.
This a very touchy subject and when dealing with the subject should be caution do you want to destroy your friendship or do you want to keep your friend, because when you do you have to remember that you can not only destroy the relationship of your friend with her/or his partner but your relationship as well with your friend so proceed with caution.
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.