OK, let's look at this with some logic.

Chances are, if they're like you, they had their fair share of partners as well, and if that's true, it means they started out dating some horrible guy. After that, their choice of partners get worse with each new relationship.

If you're looking for a girl on the same page as the current you, then you would have to put on an act. Don't get caught blazin', when your "target" shows up, put on some more conservative music, and never ever reveal how often you've been "around the block." That, or you become a total bad ass.

Choose to be the "nice guy" - They might be looking for something different, and if they go for different, the "different" is you. The crazier the girl, the more they've gone through, which means the more extreme YOU would have to become in an effort to be that nice guy.

Choose to be the "bad guy" - Simple, be the next asshole in their line-up of horrible lovers.

If you don't want to change yourself, then you'll just have to make due with the goody goodies.