Yes, there is a story behind this drabble but I'm not going to bore you with it. I really like this even if it is a bit cliché.
Still don't own them.
Silver Hair on a Black Pillowcase
He pulled back the black sheets and with a sigh climbed into bed. Everyone said that separations got easier with time but for Cloud Strife, every night was just as painful and lonely as the one before it. This had not been the longest time he and Riku had been apart but for nearly three years, those periods of solitude had never been longer than a week.
Tonight would be night number forty-six where he slept alone.
He settled himself upon the mattress and studied the empty side of the bed as he did every evening. On the ebony pillowcase laid a few stray silver hairs that Cloud did not bother to remove. He was not entirely sure why but he felt better seeing them there, as if some physical part of Riku was still with him.
Slowly reaching over, he lightly touched one of the strands. Fighting back the wave of pain that tried to wash over him every night, he retracted his hand. Closing his eyes, he willed himself to rest.
Sleeping had become such a difficult thing.
Sometimes he wondered why he was trying so hard to act okay when everyone knew he was not. He went through the motions but there was nothing behind them. Sora's arrival two weeks ago had helped but he was empty inside and would remain so until the owner of those few strands of silver hair returned.
Cloud felt a slight movement of air and instantly went on alert. His body did not physically react but all of his senses reached out. There was a shifting on the mattress and a familiar presence filled his heart. He did not dare open his eyes.
After a moment, lightly muscled arms slipped around his waist and a warm body brought itself close. That scent he knew so well drifted into his nostrils and he completely relaxed into the comfort that had so suddenly returned to him.
"I'm home and I'm not leaving again."