Reason #1 why you are wrong: Girls are under 18. That means having sexual contact with them is a crime. If you mean adults, use the correct term: woman.
Reason #2 why you are wrong: You assume every woman (see, cuz we're talking adults) wants an exclusive relationship and every man wants to play the field. This is untrue. Some men want to be exclusive, some men want to play the field.
It works exactly the same for women. Reason #3 why you are wrong: If either party (male or female) wants exclusivity, it must be agreed to by both parties.
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.