Take it from an old man, as you grow up friends drift apart. People change, you meet new people. You'll always cherish those friendships you had back then, but you will never all be together in one place like you are now. People will have jobs, families, girlfriends, spouses, commitments. I love my best friend to death, we've been friends since jr high, but I see him once a year now.

Take advantage of the time you have with them. Go to the gas station and get a soda that's too big, walk around town aimlessly, do boring kid stuff. You'll have all the time in the world to be online here later, late nights writing comments at 10pm, thinking fondly about doing stupid teenager stuff with your friends 20 years ago