Stood on my roof and tried to see you forgetting about me
Hide the details, I don't want to know a thing.
Hayner couldn't remember. But he knew something—no, someone, was missing. He knew Sora reminded him of that person, and it pissed him off that he couldn't remember who. They'd been important, to him, to Olette, but he just didn't know why.
And the first time Hayner woke up next to Seifer, after the trios' foolhardy experiments with alcohol, his first thought was 'What would Roxas think?!' But he didn't remember that, even seconds later.
And when Olette and Pence fell in love, almost a year later, Hayner wondered; 'Is he hurt?' But he hadn't known who he meant by that. When Sora came to visit, dragging along Kairi and the odd boy Riku, it felt like the hole in their lives that they hadn't noticed had been partially filled. But Hayner couldn't figure out why.
He couldn't figure out why he sometimes bought an extra sea-salt ice cream, or why he treasured that little red glass ball of his so much. He couldn't, for the life of him, remember where he picked it up, but Olette and Pence both had one and they all carried them wherever they went. And he didn't know why he sometimes stopped at the alley between two houses that had always been there, and wonder faintly why there was a house missing.
Hayner had once said they wouldn't always be together, that they should make the most of the time they could share. He wondered sometimes, if he had said that to a particular person, someone he'd known back when he was a kid. Because someone was missing.
And when Hayner willing stretched up, standing on the tip of his toes (because the man was just too damn tall), and completely sober, kissed Seifer, and felt indescribable happiness when the man pulled him closer and kissed his back, he wondered if Roxas was happy for him. And then the name stuck.
Hayner couldn't remember, but that didn't mean he didn't know.