I’m sure someone somewhere has talked about this before BUT
I absolutely adore the idea of Castiel healing Dean with kisses instead of his standard forehead boop. Like after a tough fight that has Dean all bruised and battered, Castiel just comes to him without a word and starts placing gentle kisses against a bruise on Dean’s cheek or a cut on his lip. And I like to think he can choose not to heal everything all at once, that maybe he takes his time to literally kiss Dean better one kiss at a time. And it’s not just about reaffirming that Dean is still alive and that they’re together; it’s also about comforting him and making sure he knows he’s loved.