The kisses goodbye were the only habit that stuck over the next few cases. Cas experimented with a variety of new greetings and slang that he'd observed other humans using, but the Winchester's seemed to like him better when he just spoke like himself, and he dropped them all after a couple tries. Except the kisses, those the boys accepted easily, so he continued it.
Sam watched as Dean grew more and more used to these unusual goodbyes. He didn't flinch after the first day, and by the end of the week he seemed to expect them, turning his his cheek toward Cas each time he was going to leave. Sam didn't bother to tease him about it because they both somehow looked better off for it. Less tense, and harder to irritate. If it kept them happy, he didn't care if they made out every time they parted.
One particular day, Dean and Cas had been arguing about who knows what, and Cas had looked ready to either fly off, or kick Dean' ass. When he grabbed Dean's shirt collar, Sam had been sure he was about to throw his brother into a wall, and started to reach for them to break it up. The angry angel tugged Dean forward and practically growled at him,
"You. Are. Infuriating, Dean Winchester."
Dean closed his eyes and tensed up in preparation for his impending flight/beating, and wasn't at all prepared for the firm press of soft lips on his cheekbone. His eyes flew open and he stared in the angel's sparking blue ones. All the stubborn anger from before dissipated and he was left with a strange light feeling in his chest that wasn't all that bad. Dean chanced a small half smile at his angel and was rewarded with one in return before Castiel disappeared.
He stumbled a little, now that Cas wasn't holding him up anymore, and when he'd settled he huffed a breath and looked at his brother, who's face was weirdly blank. "That was close. I almost got beat up by an angel...again."
Sam's only response was to snort and go back to his laptop, shaking his shaggy head.
I know this is a lot shorter, I wrote it in Earth Science because that's got to be one of the most boring classes on the planet. Writing this kept me awake.
