Why does it still hurt me to see my ex with someone? Can it be cause the bitch hurt me and now she is happy?

No. The person doing the hurting is going to feel guilty forever.

Psychotics have no feelings or emotions and can hurt or kill anyone without a flinch and have fun doing it. But there's only 2% of those in the population, so if you think someone is psycho, they probably aren't, maybe just a potential trouble source from being suppressed by parents or school or something else.

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.