Re: Should i move on?
If you feel that the ball is rolling downhill, then it probably is. There are ways to reverse the direction of this ball, but it all depends on what you want.
As for whether I think you should pursue her or not, I think in the outer sense it's not worth it. Here goes why:
You already seem to sense things are slipping, mainly because you burned the candle too quickly. In addition, there's far too many things that would force the two of you to go out of your normal routine for each other. Jobs, distance, times sending and receiving texts, it's a whole ton to do and given the fact you are not already in a relationship, I don't think the recommended advice for a long distance relationship will work.
I say in the outer sense because that's looking at the situation from a third-person. Only you know the connection the two of you have, and if you are confident that she would say yes, and you are willing to put in the large amount of effort, then do it.
"There is no better than adversity. Every defeat, every heartbreak, every loss, contains its own seed, its own lesson on how to improve your performance the next time." - Malcolm X