The fact that in the Peace Of Mind episode, Cas canonically took the time to tell Dean that Sam wore a cardigan
I'm just imagining that phone call
"Hello Dean. Yes Dean, Sam is alright. It wasn't a witch, but a psychic man. He mind controlled Sam. Yes, Sam is alright, he was made to think that he was married to a woman and forgot about me. Yes, a woman. I know. It wasnt her fault, she was mind controlled too. She was intimidating. She yelled at me for sitting on a chair. Yes Dean, *sigh* Sam is alright. He did wear a cardigan, it was very stylish. No, I do not have any pictures. We are on our way home now. Yes, Sam is fine."













