Your Daily Mun: The leaving friends
Your best friend(s), and then gone all of a sudden. They still exist of course, but moved on. Found a partner, married even, got kids, moved far away, found other (better?) friends who don't match with you. And in stead of discussing everything everyday, you now see each other once or twice a year. If you are lucky.
Mind you, you can be the leaving friend as well, perhaps without knowing it.