A relationship between two people is made up, for the most part, of invisible things: memories, shared experiences, hopes and fears. When one person disappears, the other is left alone, as if holding a string with no kite. Memories can do a lot to sustain you, but the invisible stuff of the relationship is lost, even as unresolved issues remain: arguments never settled, kind words never uttered, things left un-said. They become like a splinter beneath the skin-unseen, but painful nevertheless. Until they're exposed, coping with the loss is impossible.