"Sam?" Cas mumbles, and it's a good thing the taller man had had all his attention focused on his boyfriend since he entered the room and found the former angel restlessly stirring in his sleep, so he can hear him and respond.
"Where are you going?" His voice is dripping with exhaustion, and sleep. But there's something tinged in there like don't go.
"Nowhere, Cas. I'm coming to bed." Sam smiles, and in a matter of moments, was settled next to him.
Immediately, Cas koala-d him deeper into the mattress, snuggling up to his side, tucking an arm around him, and pulling the warm comforter over them. "Does that mean you didn't sleep at all last night?"
Sam lets out a short huff of laughter, putting his arm around Cas, palm pressed to his shirt, and lightly stroking his back. "No, it means you were way too asleep to notice when I left for my run."
Cas sighs, like he's relieved, though he hadn't managed to sound too troubled in the first place. Must be all the exceedingly effective human-happy-hormones, always shooting through his bloodstream any time Sam was close, safe, and his.
"Go back to sleep." Sam whispers at him, and Cas doesn't need more convincing. In an undramatic fashion, he slips himself off of Sam, and turns to his side.
Wordlessly understanding what Cas needs, Sam slid himself lower on the bed, till he was lying down too, and curled himself around the shorter man, hugging him back to his chest, and burying his nose in his hair.
"I love waking up with you." Cas purrs, eyes closed again. "It's the favorite part of my day."
"Are you sure?" Sam teases, squeezing his arms around Cas just to make the latter squirm and giggle. "'Cause I'd say your favorite part was coming back to bed with me."
"Let's settle on," Sam kisses Castiel's head, just before he drifts off completely. "Your favorite part is me, in your bed."
"I'll do you one better." Cas tries to sound functional, but sleep is way too overpowering. Goddamn humans and their need to sleep. However, he may have enough woken-up-seconds left, for a line worthy of a romance bestseller, and which makes Sam blush though he can't see it. "My favorite everything is you."
