Has anyone else noticed that this season, the pro/anti Destiel-going-canon debate is starting to look more and more like the same-sex marriage debate?
Pro:Tropes and narrative structure and parallel and demographics and arcs and endgames and storyshapes and foreshadowing and ratings and trends and numbers and charts and polls and character development and representation and reasons and and and and...
Dean thinks Cas is going back to Heaven for good, “locking the door behind him”, and is worried about Cas’s safety since the angels aren’t too happy with him.
Cas, on the other hand, is thinking about how he’s going to “lock the door behind him” as he leaves Heaven, and how he couldn’t possibly stay because the angels want him dead.
Dean’s lines are ambiguous enough in meaning that Cas doesn’t realize what Dean was thinking until he says the E.T. line, which is when Cas pulls the confused face (which Dean just sees as Cas not getting the reference). They cupid shows up before anyone can elaborate.
TL;DR: CAS WAS PLANNING ON STAYING AFTER HE CLOSED HEAVEN AND DEAN DIDN’T EVEN REALIZE IT
Watching the episode, *I* thought Dean meant closing the doors behind him on the way back to Earth. So obviously this is correct.