Hey, this is a short fic I'm writing from a prompt I received on tumblr. (It's super late, I know. I'm sorry.) It'll probably only be three or so chapters. Hope you like it!

Castiel didn't know how many times he would tell himself that this was the last time. Out of all of the angels, it seemed he was the one with the least self control. He knew it was wrong of him to come visit Dean after having disappeared. It was selfish. At least, it was in the fact that Dean never actually knew that Castiel was there. It wasn't fair of him to give himself reassurance of Dean's well-being without providing him the same comfort. He just couldn't bring himself to face the hunter after all that he had done while under Naomi's control. If he hadn't managed to break free from her grasp at the last minute…

He shuddered. He didn't even want to think about it.

"I need you…"

Castiel sighed. This was the fourth time he had appeared in Dean's bedroom while he was sleeping. He knew that Dean thought it was "super creepy," as he put it, but he just couldn't stay away. It seemed that this man was all he could think about lately, even with the dire situation he was currently in. But he was afraid of Dean's anger, so he never made contact. He wouldn't stay long. Just long enough to assure himself of the hunter's safety and well-being. Twice, he had come while Dean seemed to be in the midst of a nightmare. Castiel had quickly calmed his mind with a touch, relieved to see him relax with a sigh. Even when he wasn't having a nightmare, Dean was a restless sleeper, and it put Castiel on edge. He wished he could assure him that he was alright, that he was no longer under Naomi's control and doing unspeakable things.

It took him a few seconds after landing in Dean's room, given his preoccupied mind, but Castiel soon realized that something was wrong.

Dean wasn't in his bed.

How could he have not realized that? Was he blind?

"Cas…"

Castiel froze. The voice had come from the doorway. He spun around to see Dean standing there.

"Dean… I…" Panic bubbled in his throat. He wasn't ready for this. Not yet.

"His names Cas," Dean continued over him, "What's your name?"

"W-what?" Castiel stuttered. He took a step closer, looking at Dean.

"Chastity. Wow."

Dean's eyes were glazed over as he stood in the doorway. He stared unblinkingly ahead, as if Castiel wasn't even there.

"Is that kismet or what, buddy?" A lopsided grin formed lazily on the hunter's face. Something about this seemed strangely familiar, but he couldn't quite put his finger on it.

Castiel waved a hand over Dean's eyes, finding that it elicited no reaction.

"Well, he likes you and you like him, so…"

It was then that it clicked. He seemed to be reliving the night when he had taken Castiel to that brothel. But why? Was he hypnotized? Under a spell from a witch?

Wait. No. Castiel remembered now. Humans sometimes experienced something they called "sleep walking." But did sleep-walkers normally relive past memories? Well, he certainly wasn't an expert. Dean had continued talking while Castiel was deep in thought.

"...Now just stick to the basics, okay? Do not order off the menu."

"Dean? Can you hear me?" Castiel tested. Dean didn't respond; he simply carried on talking through the conversation they had had what seemed like centuries ago. So, Castiel took a seat in the chair in the corner of the room and watched Dean play out his half of the scene. He supposed that as long as Dean didn't know that Castiel was there, it couldn't hurt. In fact, it would probably be better that he stayed to make sure that Dean didn't hurt himself in his state of unawareness. Dean paced around the room a bit, and Castiel fathomed at how intriguing the human mind was. It was so peculiar that Dean could be asleep, yet have enough control over his perception to know how to walk around without crashing into anything. At the same time, however, he did not possess enough perception strength to realize that he was not, in fact, in a brothel. Dean's sudden, loud, laughter interrupted Castiel's thoughts.

"Oh, nothing. Whew. It's been a long time since I've laughed that hard. Oh. It's been more than a long time. Years." And with that Dean became silent, shuffling back to his bed and lying down on it.

Castiel stood, crossing over to Dean's bed. He pulled the covers over his now still body, before flying off.