Well, there are things about the note that would make me think it's from a guy, just delivered by a woman. Mainly the "I'm not trying to be creepy" bit. And if you're not trying to be creepy, why start out with "Dear cute girl"?

And, if I'm being entirely honest, I've never met a woman with handwriting that bad. Which is not to say they can't have handwriting that bad, it's just not something I expect.