Correct me if I'm wrong but...
I know a lot of people seem to think that Dean might have gave Cas the blade so he could take him out when the times comes but uh...isn't the blade basically powerless without the mark of cain? Cas won't be able to use the blade to take Dean out without the mark of cain and Dean knows that as well...i don't think that's what he gave him the blade for.
Dean giving Cas the blade was a huge act of trust, especially in front of Crowley. He chose Cas and no matter what has happened between them in the past, he trusts him with the worst part of him. That was a truly beautiful destiel moment. I can't believe we have to wait another month for another episode! My poor shipper heart











