Co-worker conundrum, what do i do?

[youbloph]

Alright, heres the backstory. We've been working in the same place for months, and have always gotten along, you may go as far as even saying we're friends. We hadn't had much contact outside of work until fairly recently when a group of us started hanging out after work. This went on for a few weeks until we ended up both wanting to go see a movie that came out, we had invited another friend, but he had work and had to bow out. So it was just the two of us. I didn't think much of it at the time, a guy can have female friends right? But as a couple weeks passed circumstances had us hanging out a number of times alone, and each time, things started to feel more and more like a date (getting dinner, walking around watching the sun set, and watching a movie type stuff). Now, normally this would be great right, a cute younger girl (i'm 19 about to turn 20, she just turned 17) with a cool personality being interested in me. But I suppose i'm not that simple, I have my own motivations to not want a relationship (emotionally, geographically (i'm moving at the end of summer), and financially, so I don't feel it would be fair to pursue a relationship). She knows about my lack of interest in a relationship to some extent, but I think she doesn't necessarily have the experience to realize the last few times we've hung out, at least in the eyes of the outside world have definitely been dates. This all on top of the fact we work with each other, so relationships and their inevitable end always lead to awkwardness in the work place. So heres were i'm at, I don't think she quite realizes all of this, or maybe does and is in the same boat as me (she has a much stronger lead of attraction though and I feel may want to pursue something, but that's speculation). And coming from past talks, she still holds the teenage hostilities toward others that she has dated, so she may not have the emotional experience for a direct talk to be helpful. But I also would hate to continue to be nice and potentially lead her on, and I don't think I have the ******* in me to start blowing her off and ignoring her. I've thought about pursuing some other romantic involvement to make it clear that i'm only interested in friendship, but that ran aground with being just as much of a passive aggressive dick move than other ideas, on top of my previous objections against a relationship. To be honest, I don't necessarily have much experience dealing with these types of situations, so any input would be appreciated.