Unchained Melody (A Destiel AU)

Angels are dicks, at least, that's what Dean Winchester thinks. He stands by his rules, and his rules only that not even his younger brother Sam Winchester, can't interfere. And then, Dean went to hell. Literally. And once he saw the blue-eyed, soft-spoken Angel of The Lord, Castiel, he knew that he brought big trouble. And now that the angel is tagging along, will Dean finally abide a rule he swore he'd never break?