You need to spend some time together before you talk to him about things that went wrong, give him the good times that you had and bring him back to remember the memories that he enjoyed, after he really remembers what happened then talk to him about it and speak about how you have matured and whats happened since and how that makes you feel. If he really loves you and you feel the same then he should understand that the things that happened are the past and that who you are is what he loves.
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.