Sliding my timely fic into the reblogs here. Credit for the prompt goes to @futurepastme
Love Hold You 'til the Morning Sun
https://archiveofourown.org/works/61994113/chapters/158533081
Teen and Up | No archive warnings
At the whims of his magic and the demands of the world's various turnings, sleep never came easily to Merlin, that is, until he met Arthur.
Or
Lifelong insomniac Merlin discovers that he sleeps better next to Arthur, and better still in his arms.
You cannot convince me that Merlin and Arthur didn’t cuddle on trips through the forest. Like come on, Arthur literally sleeps holding his pillows and you cannot convince me Merlin doesn’t run cold in his sleep. There’s no way they didn’t cuddle, even if they didn’t mean too, they definitely woke up curled around each other. They never spoke about it, but it just got to the point where they’d place their cots right next to each other because they knew they’d end up snuggling at some point through the night.