It was late night, maybe 2 or 3 in the morning, and Dean was wide awake working on finding information for a new case.

Whilst he was working he hadn't heard his boyfriend, Castiel, roll out of bed or walk towards him until a head was on his shoulder.

"Come to bed, Dean. It's cold without you," Castiel said burying his neck in Deans shoulder.

Dean sighed and shook Cas off him dismissively. "Cas, I can't. I need to finish the page up."