And Dean hasn't had a cigarette since he was a kid, but he takes one from Marla this time. Sure they'll kill you, she says, but I bet you can name a thousand other things that can.

Sam would know not to touch her 'cos Bobby would kill him if he does. Well, maybe not 'kill', but when Dean gets all blatant on Marla, Bobby always gets his stinkeye on. Somehow I think she would gravitate towards Cas, once she gets used to how creepy he is. She kind of has a history of liking creeps.