Dear Cas,

Castiel’s eyes filled with tears. Looking down at the note. The damn note that ruined everything. How could something so insignificant as a piece of paper with words on it cause so much devastation. He let a few tears fall shamelessly. His heart was breaking and all he had to show for it was a note.
The damn note that ruined everything.

Dean made a mistake, and he's taking matters into his own hands to make up for it. Starting with leaving a note on the table in the kitchen, and then just leaving. If he's not around he can't hurt Castiel, right?

((If you're looking for Benny/Dean this is probably not the story for you, sorry.))