(Otherwise known as the time Castiel rescued a human soul from Hell, rebuilt his body, and inevitably fell in love with him.)

Summary: After Cas decided to become a hunter, Dean gave him a Hunter's Journal. Cas puts it to good use, and although he can't tell his whole story, he tells the important parts. Cas didn't expect to leave it in Dean's motel room, and Dean didn't expect to read it. But once he does, there's no question in his mind anymore. So, of course he prays to his angel to sort things out.