Actually here is my theory. Girls always want confidence, thats what turns them on, a guy who is confident he appears as though he is bullet proof.
But here is the thing with confidence that I've found when it comes to approaching women. Its easier to be confident when you don't really care if the girl says yes or no. If I already have some pre-arranged attachment to her, we're friends or I like her or something. Something to indicate that I've actually picked her out of a crowd before that day. . . then that makes it hard to be confident. I mean if you like the girl and she shoots you down you feel kind of bad and you easily get depressed.
Bad boys on the other hand just don't care. They need a woman on their arm but they arn't very particular about who it is. So when they ask a girl out, they are 100% confident. Why? Because even if she says no, there are lots of other girls to ask out. This particular one means nothing.
The "sweet" guy who picks the girl out of the crowd, likes her isn't so confident. There is happiness or unhappiness riding on that answer. To him it doesn't matter at that moment that there are other girls, because she is the one he wants. (Thats not to say he can't get over her or anything, but at that time he wants her and not just any girl).
So I think a lot of girls shoot themselves in the foot sometimes. Cause honestly if the guy asks you out and isn't the least bit nervous about any of it. Chances are he just needs some girl and you are his "some girl" not
the girl.
Do you want to be
some girl or
the girl?
Now on guys on the other hand you have to appear more confident. (And I don't want to act like I'm some big expert on this because I'm not) A bit of nerviousness is probably to be expected but many women want a guy who's going to feel like their protector. Appearing like you are afraid of her just doesn't give confidence in your protective abilities.