In that question, I think:

It doesn't matter how far apart you are, it matters how often you would see each other. If you want it to work out, then I'm sure you both would be more then willing to travel anywhere just to see each other. Sadly to the human mind, if you never get to see the other person you like, we start to think the "what if" concept.. What if I was to find someone else, What if it never works out, etc.. I say if you speak as little as everyother day and see each other atleast every other week, then if willing it would work perfectly. We all just need that lil recharge every once in a while to keep the flame lit.