So here are my two cents; you shouldn't use anything or anyone other than yourself to get a girl, get a job, or, really, get anything. If you get it without being yourself, you're getting something that is most likely "above" you. You'll end up failing or leaning on other people to help you get your work done.
To bring this back on topic, whenever I'm trying to get a girl, I rely solely on my personality first. If she's interested and I feel that she would enjoy magic and that I would enjoy performing for her, then I show her magic. If not, I don't. If she knows some, I might recruit her as a judge of material from a layman's (or laywoman's) perspective.
I've got a friend, relies on magic to get chicks. Very rarely works, and when it does, he usually could've gotten them just by being himself. They end up telling me behind his back, which I don't like, how "lame" or how "pathetic" his attempts were.