I read a Destiel fic which is not something I would normally do. I can't remember the title or the author. It was about Castiel telling Dean how many steps they were away from being married. At first Dean didn't realize he was fulfilling the requirements and then began to do so on purpose. It was pretty funny and I'd like to read it again, but I also told my daughter about the story and she would like to read it too. Let me know if it rings a bell.

Found by the wonderful serafina20. The (Mostly Accidental) Courtship of Dean Winchester http://tuesdayfic.dreamwidth.org/4954.html