WHAT SHOULD I DO?

There is this girl name Ashley. Now let me just say, that she liked me first. I was just her cousin, Hannard's homeboy/ really close friend. Undoubtley, we still are very good friends. As a matter or fact he's the one who sorta-kinda brought us together. Anyways he picks up her, Ashley, and I up avery night around 10 p.m. and we go riding around Daytona Beach New Symerna Beach, Deland, and Deltona and beleive it or not this is still going on right now! But anyways she doesn't talk too much when we're in the car, and sad to say, neither do I. But I KNOW for a fact that she really likes me. How?
Well, when he drops her off, he always drops her off first then he takes me home, she makes sure I give her a hug or say "Bye Jay:( ... " not "Peace" but "Bye Jay :( ..." The thing is this, she's really nice and pretty and she's 16 and I'm 17 and I'm afaid that if we go ahead and hook up and "do some things :)" she might wind up getting pregnant then... WOW! what a big change that would be in my life and I know that I'm not ready to be a dad. However, I do have a job, KFC to be exact and it's pretty steady. And what's funny is this, I DO want to be a dad, and like NOW! So now I'm feeling kind of lost. I don't know what I should do. Should I follow my heart which is to go ahead and start talking to her which would probably lead us into being teenage parents!!! (But hey! I don't mind it! :) ) OR should I put my heart on HOLD and wait? What do you think?!?