I think that it is.

[ He bobs his head along as he muses over how to make such an insane suggestion a reality. Mostly because he hates the idea of being seen as a madman. ]

There's a level of affection that Dean has for you as a friend. This is elevated further by the fact that you're someone from his world. He doesn't have to tell you too much because you already know, and that gives him a sense of security, I'm sure.

[ Vincent decides to explain it like this since it seems like Castiel sometimes is both very worldly and incredibly naive. Yet the angel says that none of this is an act. ]

In short, I'm certain that he relies on you quite a bit. There are certain things you can only vent to someone who knows where you come from, after all. [ He crosses his legs as he thinks further on this line of thinking. ] Since he's involved in matters far beyond what humans should be, I believe there's a certain level of mental strain and instability that he has, as well. Unless he's a devout believer in something?

[ He holds his hand out for Castiel to know the answer to that one before he continues. ]