only the truth!

who thinks that the girl must tell her boyfreind or fiance every thing about her past? in our society it looks like banned to have a relashion sheap between boys and girls, but here we are, each girl has a boyfreind, why does the Arabic guy accept from the foreing girl many things such as had many relashion sheap with men, but not accept it from an Arabic one.
does the truth here save us from the prejudge? .