This advice goes out to ALL GUYS... If you want a girl to like you after you've been a bad boy *show her how important she is to you*. If she's not, then just let it go.
If you're playing a game to get off don't pick a girl that's a gem to you, go for a biotch (a snatch with legs, like your best friend's sister apparently).
Know the difference between the Biotch you want to see how far you can get with, and the Gem that you want to know and know and know.
If this girl down the street is a Gem, show her that you think she is. Right now she's got you pegged as a Player, and she doesn't have time to be your field.
