A friend told me years ago that love is born out of longing. At the time, I only grasped those words conceptually. (I’ve since experienced their torturous truth.) Have you ever longed for someone? TRULY longed for someone with an agonizing, unfulfilled yearning? If you have, you understand how someone’s absence can actually feel more powerful than their presence. (Maybe you’re missing a friend you secretly wished could be something more but never will? A should-be significant other separated only by distance? A relationship ripped...