You grieve at first. And then slowly, with the yawning of the years, the disappeared gets scraped from your memory, the way your flesh can be peeled from your limbs. It's very harsh and extremely painful. But it gets done, square inch-by-square inch. Until, the skin that is your memory gets completely scarred and numbed. You live. The disappeared is detached from the dermis of remembering. And that is what is known as moving on.