It's usually the good guys who don't have the balls or courage to talk to the pretty girl, so that leaves the ill-intentioned guy who really doesn't care to approach her.
In the end the girl gets hurt, and questions where the good guys/gentlemen are.
Most Helpful Guy
The 'good guy' you refer to often doesn't have the courage because he is concerned about rejection or the pretty girl not feeling the same way - and that's perfectly normal. It's okay if you are concerned about rejection, but it helps to be aware of it. While it might not seem it at the time, it's okay if the pretty girl says no. It doesn't mean we're not good looking, or funny, or date-able. It simply means that one girl isn't interested. One girl isn't representative of every girl :)0