Easy! because it just actually occurred. I'm a misanthrope, but even misanthropes need friends.
When I was five or six, I met a guy in 1st grade Sunday School and we have been friends ever since.
A couple of weeks ago, I celebrated my 60th birthday, my wife took me to the Kentucky Derby Museum to start my birthday off with a tour of Churchill Downs. As I was perusing the gift store prior to our tour, I heard a voice behind me "what are you doing here!" I turned around to see my friend of 55 years. He and his wife had flown in to celebrate with me.