The reputation of a Don Juan gives to a man the most dangerous power. Wise virgins resist it, but foolish virgins frequently yield to the desire to take a celebrated lover from a rival - even from a friend. This emotion is a complex one, mad up of vanity, respect for another woman's taste, and the need to establish self-assurance by winning a difficult victory. Don Juan chose his first mistresses; later he was chosen. Byron said that he had been raped oftener than anyone since the Trojan War.
André Maurois