Sam/Ruby
His letter. Sam didn't remember anything about a - oh. Right. That letter. It had been years. Probably many, many years. He had left a letter behind for Ruby, asking her to move on. Sam could remember how hard it had been to write that letter and how incredibly important that it was that he did at the time. But now...now it was such a distant memory that he had actually somehow managed to forget about it. It seemed that image Ruby had, too, otherwise she wouldn't have bothered trying to get him out of the Cage. If this was real, if Lucifer really wasn't messing with his head again, and if the person standing in front of him really WAS Ruby, then he knew that he should have been furious with her. She would have gone against what he had asked her to do to risk everything for him. That wasn't what he had wanted then; he had wanted Ruby to live and be happy with their daughter.
Now, though, Sam found that it didn't really bother him.
She kissed him. Curiosity got the better of him, so he let her. It seemed right. It seemed...vaguely familiar. But it didn't feel right. It didn't feel like anything. Rather than returning the gesture or commenting on whether or not he believed her, Sam pulled back and looked at her for a long moment. He then averted his attention to the group of people surrounding them, noting that they, too, seemed to be reuniting with one another. He had been in the Cage. Sam didn't know what had happened to everyone else, so their appearance was a little unusual given the situation that either was really playing out or was being written into his head by Lucifer. Whatever the case, Sam found that he had to ask.