I disagree that it takes confidence to approach women. Courage? Sure. But not necessarily confidence. Webster defines confidence as the quality of being certain, or belief one will act in an effective way.
There's nothing "certain" about approaching a woman, and even if one has "belief he or she will act in an effective way," that doesn't mean the woman will respond.
So no, you don't need confidence to approach a chick. You just need a pair of balls. And having balls and being confident are not necessarily the same thing.