Perchance to Dream

""Look, dude-" He sighs, tugs at the bedcovers. "Why'd you like to watch me sleep?" Castiel swallows. He wants to answer Dean's question but he's not entirely sure how to." Castiel has taken to visiting Dean's dreams. And his hotel room. While he sleeps. That's the first surprising thing. The second surprising thing is that Dean goes along with it. Set in late Season 5. Destiel.