Is Crowley joining forces with the Winchesters because?
He wants a safe place in the Bunker to hide away from Lucifer and knows that if he reveals himself Lucifer will be after him. Also, I get the feeling he wants to close the gates of hell on Lucifer so he's trapped on the inside. Which is why he's working closer to the Winchesters. Crowley always has an agenda, and don't believe for one minute he was cosying up to them because of the reasons he mentions.
What do you guys think, is Crowley trying to keep a low profile and his head down until Lucifer is behind bars?
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