"I know," Sam said, with enough earnestness in return that it was obvious he believed it. From the sound of it, he was going to be spending the rest of his life fighting at his brother's side, and that was fine with him. That was good news, in at least one way, because it eased his worries a little bit. In Heaven, Dean had been so discouraged about their partnership, but somehow they'd managed to continue sticking together. And while things were a little bit strange here, he didn't feel like it was because Dean really viewed him any differently. Or vice versa.
He was just figuring out how this was going to work, letting Dean do what came naturally to him while Sam focused on the work that he'd been given to keep him busy. Well, in truth they were both distracted by spending time with other people here, they were just forming different groups of friends. Which was nothing for Sam to hold against Dean, and he didn't think Dean was upset about it either.
Or was he? Cas seemed to think that there was something more wrong, beyond things simply being different. Or was he talking about the other thing Sam had been wondering about, that vague feeling of something with Dean being off, that he was trying to reassure himself was just the passage of time? Was it more than that? A part of him thought it was, but he'd thought he was just being paranoid. It wasn't nearly so drastic as the differences between this Cas and the one Sam remembered, after all.
His eyes narrowed a little, in concern and thoughtfulness, as he examined Cas's expression. It was so interesting to see that the angel had an expression at all, that there were emotions to be read there. "I can talk to him," he said finally. "Do you think there's something wrong? Did he say something?"