Your best friend could be someone you've been with since you were babies, your boyfriend or girlfriend, someone you met in high school, or even someone you met in college who transferred to a different school. Either way, when you go to two different schools, it definitely changes your relationship. When the two of you spent every day together, you never imagined life without them. Now that you have to worry about your own lives, separately, it takes a bit of adjusting.
Every day there is something that you wish you could tell them or experience with them. You miss all of the things that only they could say to change the bad to good, and the good to better. It's funny that you never realized how much another person could affect your life until they weren't involved in it as heavily anymore. Inside jokes are things you just laugh about to yourself, because nobody else would understand. There are certain things that he or she does that would just drive you crazy if anyone else were to do them. These are things you can't change, and why would you want to?
It's comforting to know that there is a person out there who knows absolutely everything that you have ever been through, and all of the thoughts that ran through your head during that time. This person knows everyone you've ever loved and everyone you've ever hated; and chances are, they've loved and hated those same people. That's not something that can be erased.
Okay, so you don't know any of their new friends, and they don't know any of yours. You pretend to know exactly what they're talking about when they explain their Friday night adventures. When your schools play each other, the fact that your best friend goes to the opposing school changes nothing about how competitive you are, and the pride that you have for your school. None of that really matters. What matters is that regardless of whether he or she knows your college friends, you tell them all of the things that go down in their lives, and regardless of whether you know how horrible that one class is with that one professor, he or she will tell you all about it. And when their team beats yours out, let's admit it, you're really not as bummed about it as you could be.
I can be honest and say there are a fair number of people from high school who I used to talk to on a daily basis, and now haven't spoken to in years. I can also be honest in saying that I am okay with that. There's a reason that we stay connected with certain people and not others. In these special cases, the distance doesn't diminish anything about the friendship. You've been through too much together, good and bad; they know what you want in life and what you have experienced. More importantly, they've stuck by you through it all. Sometimes people come into our lives just to help us grow and then end up being left behind by the natural distances life creates. Other times, however, the distance can actually better a friendship by helping it grow.