@marilyn manson,
I just wanted to make sure you weren't some 20+ year old or something creepy.
There's no telling when she might be ready for a boyfriend -- girls mature at different rates. The truth is, she might never be ready for you to be her boyfriend.
There are several parents of teens and tweens on this board and they might be able to offer you some advice. I have a 10 year old boy so I'd be interested in hearing what they have to say too!