I'm in the same situation. I've just met a nice girl (finally) and she says she's really into me. We had agreed SLOW and EASY, but it feels a little like I want to hit both the gas pedal and the brakes, haha. I don't think I'm alone in that either. But the insecurity is epic. The minute you start to like someone...wham! You're having a neurotic fit. (Or at least that's how happens for me.) The best I can offer is to try to distract yourself and not focus on it if you can help it at all.

I hate getting attached, too. She wants me to seriously date her, but I'm afraid she'll just treat me like trash as soon as she has me where she wants me. I feel much safer right where I am. But...ugh. I should be asking you for advice, not trying to offer you some! Lol. Sorry it's not much help, I just wanted to let you know that I really relate!