You ought to be HAPPY he left you! He is an immature, babyish fool, and he's not worth a minute more of your time. It seems he does not want to think about the fact that women have menstrual periods, and it repulses him to see any evidence of it.
What would he have done, if the scenario had been a little different? What if he had taken a used condom, full of semen, and tied it up at the top and left it under the edge of your bed (men do that sometimes), where you later found it; and then you told him he was a "gross" person and you were leaving him? Would he agree with your estimation of him, or would he think what he did just all right, because he is a male?
I'm betting he would think doing that should have been just fine with you.
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.