Castiel considers this a moment and nods slowly. "If I get into trouble, I will call on you." It's what Dean has been trying to get Cas to do from the beginning, and Castiel has always gotten the answer wrong until now.

There's more to say, more to do, but now is not the time or the place and time is something they both have plenty of now. Still Castiel can't help but leave Dean with one last thought, something which Castiel isn't sure how he will react to. He has had more than ample time to consider this though, and it is one thing he is sorely sorry he has never done before. He steps forward, places his hands on Dean's face, and kisses him firm but gentle. He holds the kiss for a moment and then steps back, fixing him with a look both gentle and sad before disappearing before him without so much as the sound of wings on the air.