Everybody knows;

[vanishinghopes.livejournal.com]

[In one of the otherwise empty living spaces, Namine is curled up in a blanket with a certain little Roxas, keeping warm by the fire. On the table beside the couch they're on are various Christmas storybooks piled up, and in her hands currently is Frosty the Snowman.]

But he waved goodbye, saying "don't you cry", I'll be back again someday.