When you have insomnia, you’re never really asleep… and you’re never really awake.
I don’t know about anyone else, but I am pretty proud of Dean Winchester for NOT lying to his brother about the mark of Cain. That is some serious shit. He lies to Sam about everything! And does Sam acknowledge that? No! Here’s Dean trying to prove to his brother that he can change and tell him shit and Sam could give two shits. I haven’t seen the new episode yet, but damnit Sam better say something!