I'm looking for an older fic, I think it was for one of the movie challenges but I can't seem to find which one. It's an AU Sam/Dean (Not related) and it's the story of Beauty and the Beast (Or at least I think it's Sam and Dean, could be J2 but I seem to remember Dean being cursed) Dean makes a deal with John and Sam has to go live with him in his castle. One scene I remember most is later on in the fic Dean allows Sam to go back home to celebrate a birthday or maybe something like Christmas, and Sam promises to come back, but it looks like Sam wont.

Any ideas?

Found Sub Rosa