How do i proceed form this?

Simply put. i worked with this girl in a fast food restaurant for about a year and half before i quit and found a suitable job and she did the same few months after me. We both got on quite well, and well, i like her and im certain she does too. but we live far away from each other and our work patters never meet. i met up with her ones, like 6 months after i quit the other job, as a "hi, how you been" kind of date. it went ok but every since then its just a text message here and there and i have no idea where to take this, or what to do, how to proceed. i like her and i dont want to give up on her but i dont know what this is, i dont know how to move forward with it.

what do you do in a situation like that, do you keep trying, or just move on? :/