Warned girl about guy, completely not listening to me?

Warning a girl about a guy will usually increase her attraction to him-believe it or not you make him sound like the bad boy no girl can tame...big mistake! Of course it makes you angry because 1-he didn't get his just deserves from hurting you 2-you already know what's going to happen to her, but can't change anything 3-his personality of being an azzhole, instead of making him fail is the key trait that is making him succeed.