angelswatchingover:

Cas tells Dean, with no hesitation, that even after Sam and everyone else Dean loves is gone he will still be there and look at that second pic – he actually has tears in his eyes.

You know what I find so interesting about Cas’ words to Dean?

Cas has thought about this… a lot.

He has made a decision that he is never, I repeat, never going to leave Dean’s side.

He has contemplated it, planned it, and firmly resolved that this man standing in front of him, covered in blood and reeking of Lucifer’s curse, is his future by his own choosing. It has been years since heaven gave him any orders regarding the Winchesters, but Castiel, on his own, decided that come what may, he will stay with Dean. And that might mean centuries of trying to stop him from killing his way through Cain’s bloodline, but Castiel is absolutely willing to do this. 

He could go live out his days in heaven, enjoying the eternal Tuesday afternoon of the kite flying man and leave Dean to this mess because the Mark of Cain has nothing to do with Cas. This is not his mess to clean up. But instead, Cas declares to Dean that he has thought about and made the decision that Dean is his mission for… well pretty much forever since at this point they are both immortal.

Jesus, how can anyone, at this point, deny that Cas is head over heels…crazy, madly, deeply… please let me stay with you forever… in love with Dean Winchester?