The bunker wasn't exactly warm at night. Sam and Dean had tried countless times to fix the heating but to no avail. So when Castiel moved in as a human, naturally he was shocked to have to find warmth elsewhere, other than his bed the brothers had provided him. His room only consisted of a single bed, a set of drawers and a small, wooden table. However, it was one of the only rooms in the bunker with a window, and this made the room that bit colder.

His search led him to eventually knock on Dean's bedroom door, in hope of an extra sheet or two. He knocked quietly on the door, careful not to wake the youngest Winchester in the next room, and heard a rustling on the other side.

"It's 12:00, what do you want?" Dean sounded fairly pissed off as he opened the door, thinking it was his brother, but he didn't seem too surprised when he saw the fallen angel.

"Hello, Dean" His friends eyes softened when he saw Cas helplessly clutching a pillow for warmth in the doorway.

"Hey, Cas, what's up?" Dean was blocking the way into his bedroom, wearing only a T-shit and boxers, smiling warmly at his friend.

"Sorry to bother you at this hour, but erm... I was wondering if I could borrow a sheet. If that's okay..." Cas replied. He peered over his friends shoulder into the comfortable looking bedroom that Dean had made so very his.

"Oh, sorry buddy, I only have one... But you're welcome too it" He answered, pitying the smaller man shivering on the doorway.

"No, I can't do that, you would be as cold as I am," Castiel said with slight disappointment in his eyes, "Goodnight, Dean." But before Cas had the time to turn away, a warm hand grabbed his shoulder and pulled him inside the room.

"Cas, you can't sleep when you're freezing cold, You're shivering!" They were both standing by Dean's bed now, and Castiel gazed over to the very warm looking bed.

"Then what do you propose then, Dean? I have nowhere else to sleep" Cas replied, sounded slightly fed up.

"'Course you do! My bed is big enough for the two of us" The blond suggested with a grin. Castiel was looking at him a disbelieving look.

"Doesn't this break the rule of 'personal space'?"

"Well... this is an exception, we can't have you freezing to death now" Dean walked over to one side of the bed and gestured for his friend to do the same.

"Dean, the possibility of me freezing to death in my bed is extremely low" Despite his arguments against the idea, he found himself walking round to the other side of the bed to Dean.

"Stop moaning, get in" Dean sounded adamant as he settled himself beneath the duvet. Neither of them said anything as the were getting comfy, and they left a reasonable gap between them, just enough for it not to be weird.

"I'm turning the light off now" Dean said quietly, as he reached over to the small lamp on his bedside table.

"Okay, goodnight Dean, and thank you" Cas replied sleepily.

"And you Cas."