Nickelback - Photograph almost gets me.
When we all left school, my friends and I grew more distant as we moved away, but no matter what, one random night you'll get a phone call 'cause one of the lads has found a photo of the good old days and they want to catch up. That then leads to everyone calling everyone... It's really great! We still all meet up from time to time.
I miss the old days :')