Soul was something Castiel definitely had, more than most people he'd ever known. Once he'd gotten the hang of feeling, he'd immersed himself in anything that provoked emotion. He liked delight especially, of course, but he could take the sorrow and and fury and terror. In fact, he loved everything 'human'- after all, it was the closest thing to what he was now. Cas loved music-rock and pop and alternative and anything where you could just hear the emotion. He loved sleeping and eating and hunting and reading and shagging, and above all else, he loved Dean.
Piles of blankets covered Castiel's motel bed, keeping him warm as he dozed beneath them. A radio played quietly on the bedside table, broadcasting a barely-audible love song. The one upside to being a fallen angel was that he could finally sleep. He was roused from his slumber, though, as he felt Dean sit down at the foot of the bed. Poking his head up above the covers, Cas smiled at the hunter. He reached out and turned up the radio, and Dean grinned as he recognized the song.
"Nothing is between us now, I can't believe it's true..." Without a word, Dean slipped under the blankets beside Castiel and closed his eyes as the angel slung an arm around his shoulders. The leather of the hunter's jacket was warm on the angel's skin, and he beamed as he felt Dean reach over and take his other hand. This was the best part about falling, Cas decided. There truly was nothing between them- they were free to love. And, even if he was still a slave to the "proper" angels, he would still feel free if he had Dean.