Dean was furious at Sam. He'd just up and left, taking the Impala like it was his own. Of course, they had been fighting and he stormed off, but that was always Dean's move. He was the one who'd slam the door behind him and drive off into the night and wouldn't show up until day break. But now he was stuck in the crappy, sixties era motel alone, with no one to bicker with. He buried his face in his hands and cleared his throat. Once his hands had dropped and he'd opened his eyes, he jumped at the sight of Cas not two feet from him.
"Damn it, Cas, give me a warning next time!" Dean yelled, still angry. He knew it was wrong to take it out on Cas, but he couldn't help it. It was bottled up inside him and he had to let it go. "You can't just pop in like that. Give me a heart attack why don't you." He mumbled.
"I am sorry, Dean." He said. Cas had just returned from the chaos that was Heaven. He had fallen back into his old habits as an angel, and forgot that he frightened people when he would appear out of nowhere. He loosened his tie and sat down on the bed, looking up at Dean. "What is the matter, Dean? You look upset."
Without thinking, Dean sat down next to Cas and started spilling. "It's Sam, Cas. He's different… I know it. I know something is wrong with him. Has been ever since he mysteriously came back from Hell. Which is still something... How did he manage to get out of the Cage? I thought that thing was locked up tight. But that's not the point. It's almost as if he's left a part of him down there, with Lucifer and Michael. I'm just worried… I mean Sam's not the Sam I know. I want my brother back. My real brother." He took a deep breath and looked over at Cas.
Cas stared blankly at Dean, wanting so bad to tell Dean what he had done, and that he was so sorry that he had failed. But something inside him knew if he did tell him that Dean would be furious and disappointed and possibly even hate him. He didn't want that. Oh, no. Cas was too much in love with Dean to risk any damage to their ever-growing relationship. So he replied, "Is there anything I can do to help?"
"There is one thing—" Dean stopped abruptly and grabbed Cas' face and planted a kiss.
Dean's lips were warm and soft, and Cas could feel Dean's tongue just behind the gate of his lips. Cas opened his mouth slightly, urging Dean to do the same. Dean obliged and slipped his tongue in Cas' mouth, entangling their tongues in harmony.