Be True to Your Heart
After a divine intervention Dean is left mark free. When the number of cases starts to decrease he finds himself with time on his hands, and that means time to think, something he hates to do for too long. It's with a slow realization that his feelings for Castiel are more than simple friendship, but he doesn't know how to tell him as much, or how his brother Sam will take the news. So he swallows down these feelings and tries to get on with his life after Castiel leaves them to seek out his own existence. Then someone comes into his life that changes everything, but will it change how he feels about Cas? And will Cas ever realize how he feels in return about Dean?