are they intimating Ruby's Lucifer? Dean and demon!Kaycee have a conversation about their God and how he was a fallen angel who wouldn't bow down to man and at the end Ruby told Sam to just think of her as his little fallen angel on his shoulder.
Or am I reading way too much into this?
I'm pretty much brain-dead from job training all week, so I haven't had a chance to read the reactions of everyone else.
Do you think they're really going to go there? Oh, and I'm completely spoiler free, so I'm just looking to speculate, not be spoiled!