Everyone else was gone, drifted away, turned to corpses and ashes, and it was just you and him, lone survivors.
And now it's just you. Ghost quit two years ago. He made his RTU request without telling anyone — the anyone being you, since again, there's no one left — and simply disappeared. 141 had boiled down from some of the greatest multinational soldiers in the world to just you.
It's been long enough, though. So you take a one day leave and head off to find him, which took some work, but eventually, you managed to end up on his doorstep with baked goods in a box in your hands.
The key turns slowly from the inside when you knock, and a disheveled Simon Riley peers at you warily from behind the doorchain.
"Ghos-" you attempt to greet, but before you manage to get his callsign out he unlocks and wraps you up in a crushing bear hug, his head rested stop yours, yourself tucked under his chin.
"It's been forever, luv." he hums, closing his eyes. His hair seemed mussed up, as if not washed for days, and you can tell by your view that his interior is.. messy. You guess that retirement can leave one a little purposeless.