Four Times Cas And Dean Didn't Fool Sam

4 Times

Four Times Cas and Dean Didn't Fool Sam (And One Time He Was Totally Done With Their Act)

Notes: I implied that Cas is human here, but I also wanted it ambiguous if you wanted Angel Cas. So yeah. He's hunting with them, at any rate.

Cross posted on ao3 and ffnet! (I always say this because I'm paranoid somebody will "report" me to "myself" for "stealing" an idea, so this is just to clarify yep, it's me each time!)

-------

Four Times Cas and Dean Didn't Fool Sam (And One Time He Was Totally Done With Their Act)

Sam wasn't quite sure when exactly Castiel and Dean first got together, but he knew beyond any doubt that they were. They were both in better moods, even during hunts – hell, when one of them was injured, they still managed to sound hopeful as they finished off whatever creature they were taking down. Castiel was matter of fact in proclaiming the monster's future demise, while Dean was always joking and upbeat even if he had bones broken through skin and tasting the air.

They were also way too at ease with each other these days. Sometimes on stakeouts in the Impala, Cas sat up front with Sam and Dean, and Dean didn't say a word. Not a single syllable about personal space.

The eye thing had gotten worse, too. Sam found himself repeating the same information an extra two or three times before Dean clued in and ripped his gaze away from Castiel's eyes.

And oh yeah, then there was the time he caught them kissing.

Sam had been looking up some information on his computer, tracking the beginnings of a case, when he'd realized he was out of beer and innocently figured he'd just go snag another one.

Dean had been taking a while in the kitchen, and Sam should have known. He'd almost yelled for Dean to bring him out another bottle, but thought better of it after realizing he had to get up anyway to hit the bathroom.

He'd taken one step into the kitchen and thought Nope, don't really need another beer after all yet at the sight greeting him. Dean and Cas's mouths were vacuum-sealed, Cas sitting on top of the preparing table with his legs locked around Dean's waist and Dean's hands tangled hopelessly in Cas's hair.

They were both fully dressed, but it was still so over-the-top that Sam immediately stepped backward. As he spun and retraced his steps, he hoped they at least cleaned the table before they had to use it again.

-----

One more giveaway happened the day Sam could tell that Dean and Cas were holding hands at a diner. Not overtly, but under the table. They'd stopped to get a bite to eat after a case and talk about how things went, maybe discuss where to search for their next one. They'd been sitting at a small table, Dean and Sam across from each other and Castiel on an adjoining side.

Sam was mixing dressing into his salad, flipping everything around to make sure it was even when he happened to glance up and see Dean sitting motionlessly, burger forgotten entirely. He was staring blatantly at Cas, who was gazing out at the parking lot through the nearby window. Castiel was pensive, staring at nothing in particular that Sam could discern, and Dean had that soft look on his face with warm affection in his eyes. It was an expression Dean had very rarely ever used, and one that made Sam glad he had somebody to make him wear.

Even if they were being stubborn about letting him know things had changed.

Without noticing that he was being watched – really, Sam almost felt like he should be insulted at feeling so invisible– Dean apparently reached over to take Castiel's hand beneath the table, his arm inching closer and Cas's arm moving subtly.