There's not a lot that makes me more embarrassed about my gender than guys who talk about having a "system" to pick up women. And no, it's not a rare circumstance. There are books, forums, DVDs, fucking boot camps devoted to full-on psychological manipulation (some of them actually talk about utilizing mild hypnosis). I'm not going to get into the ins and outs of that subject because it's a whole article by itself, but it's important to bring up because those "systems" are used with the specific purpose of obtaining sex, and they're built on a foundation of dishonesty.
There are several reasons you can't pull that bullshit when you're attempting to meet someone new if your goal is starting a relationship. The first is obvious: If you present yourself as something you're not, you can't keep up that act forever. Eventually, you'll have to show your real self, and she's going to think, "Wait, this isn't the person I met." And she'll be right, because she's never experienced that side of you before. In her eyes, you will have changed from one personality to another, and it can doom what you've built in a heartbeat.
"I'm so sorry. I should have come clean about the devil worship. At least the human sacrifices."
The second is something that should be obvious, but sadly is not. Ready for it? She is *gasp* an individual! Now, don't get all huffy and roll your eyes with a "Yeah, no shit, dumbass," when you hear that. Because if you were ever planning on using a "system," it means you didn't really understand it.