Speaking from my own experience, here are a few things to keep in mind if you find yourself in a geographically-challenged romance.
1. Know what you're getting yourselves into.
Long-distance relationships are awful. Really, really awful. Don't make the mistake of romanticising what is happening. Don't imagine that you are somehow proving the depths of your love for one another. Life isn't a Nicholas Sparks novel, where star-crossed, heart-sick romance is something to aspire towards. In reality, you're cheating yourself and the person you love out of a whole lot of happiness and memorable life experiences. You're not getting more in touch with your emotions, you're hollowing yourselves out inside. It is going to be terrible, no matter what. And it is not going to get any better until it's over.
When it comes to long-distance relationships, my first and most important suggestion is to not attempt one at all. It's better to rip out each other's hearts and piss on them right now. Move on with your life. Pursuing a long-distance relationship is like pursuing a career in the arts-if you can even IMAGINE a version of your life where you're happy without it, then let it go. It's not worth the heartache.
That said, love is a pretty powerful thing when it's the real deal. Breaking up isn't always an option. So-
2. When you do see each other, don't expect every second to be amazing.
One of the things you will never get used to is how insane those fleeting times are when you actually get to be together. There will be a tremendous amount of build-up and expectation to every in-person visit, and it will never live up to your sexy, romantic expectations. You can't cram two months of relationship into a two day visit, no matter how hard you try. The sex won't always be amazing, your date won't always be magical, and-more than likely-at some point you'll get in a huge blow-up argument with each other. If that happens, understand that these arguments are inevitable and necessary for your relationship to survive, so don't start blaming each other for "ruining" your planned romantic weekend with a fight.
3. Don't cheat.