He is a filthy scoundrel, he is scum, a terrible human being. He left you when you were pregant for Goodness sake! And now he is just trying to boost his ego by trying to get back into bed with you, and trust me thats all he wants, a good root, he is already emotionally invested with this other women and he is just trying to use you, so please for your sake don't give in to him.
Congratulations to you on not giving in to him and also for taking responsibility for yourself and raising your son as you have, I really admire that. And if he still won't leave you alone tell him if he doesn't then he isnt going to be allowed to come around anymore because its just plain innappropriate.
It don't matter why he is doing this, all that matters is that you don't want him to do this. You should tell him if he don't stop then he cant see your child at your house without her, or he has to have visits at his house. You don't have to put up with this.
If he starts being all funny you can even get child contact threw the courst stating that he don't have visits at your house. Don't bother telling her if she won't believe you. Just keep yourself safe.
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.