Dean walked into the room to see Cass lying across the couch with Doctor Who playing on the tv. His hand was thrown haphazardly in a bowl of popcorn.

"Dean, have you ever seen this show? I'm already to the tenth doctor," Cass asked as he noticed Dean's presence. Dean smiled and pushed Cass' legs aside to claim a spot on the couch.

"Yeah, I saw a few episodes as a kid. The old ones though, none of the new ones."

Dean let his head fall to the side as he snuggled into Cass' shoulder.

"You know, I feel bad for the doctor. He'll outlive everyone he loves, if he doesn't get killed. He's not the same as his friends. A Time Lord will never know what it's like to be human. I think that's why he's so fascinated with them. Humans are unlike any other creature."

Dean stared at Cass. He looked as though he was about to cry.

"Yeah, well, it's just fiction, Cass. Don't let it get to you."

Cass looked at Dean, locking their gazes for just a few moments before returning his view to the screen.

"I think fiction was created to relate to. Even someone who has never met another whom they could understand can find someone in fiction that resonates with them. I think it's rather beautiful."

"Cass, don't be going all Metatron on me," Dean laughed, snuggling even closer and tucking himself under the other's arm.

"No, Metatron believed fiction should influence reality. That fiction was more important than reality. I think that stories are an extension of real life. An escape before you have to face your own reality."

Dean smiled.

"Keep talking nerdy to me, babe."

Cass jokingly pushed Dean away, a grin on his face, before pulling him back into his arms.

"I'm serious, Dean. I think it's wonderful. I like the emotion, even if it hurts."

Dean interwove his hand with Castiel's.

"Why would it hurt?"

Cass paused.

"Because I understand the Doctor. If I am not killed, I will outlive you and Sam easily."

Dean looked into Cass' eyes. He'd known that Cass would live longer than he or Sam, but he'd never put that much thought into it. He'd always assumed it was a problem for another time.

"Yeah, but when I die, my soul's going to go either up or down, so I really won't be dead. I'll just be… Somewhere else, I guess?"

Cass was kept quiet, returning his attention to the screen, where The Doctor and Rose spoke about a werewolf.

"You're always welcome to visit me in my own personal slice of Heaven, assuming I make it through the pearly gates," Dean joked, wrapping one arm around Cass' stomach. "It wouldn't be much of a Heaven without you, anyways," he added softly, almost too quietly for Cass to hear.

Smiling, Cass placed chaste kiss on the top of Dean's head and pulled him closer to himself.

No, Cass thought. Nothing could ever tear us apart.