Well, from your description it doesn't sound like he's interested. Sorry. It seems like you have two questions to answer.Do you want the friendship to go back to the way it was, or do you still really want to pursue something more?
If you want things to go back to the way they were, then you might have to sit down with him and have a conversation face to face and say something like, "I have feelings for you but it doesn't seem like you have feelings for me. It's okay. I'll get over it.
I don't want to lose you as a friend.
Only thing I can say is don't back off like everyone does. When someone states their feeling to another person there is always an odd time when that person is trying to figure out how they feel for the person that told them. I'm not saying attack the guy, no.
Just keep showing him you are there and this doesn't change your relationship.
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.