"Hey, Cas? Can we talk?"

"Yeah, sure, Dean."

"Where's Sam?"

"He went take Lilly on a walk."

"Oh, good. I need to talk to you about Sam."

"What about him? Is something wrong with him?"

"No... Cas, just promise me you won't break his heart."

"Dean, I would never do that. I love him too much to break his heart."

"I know you wouldn't... It's just... He's had some... Very bad relationships in the past. And I know you wouldn't be anything like them, but I just want to make sure.."

"I understand, Dean. I promise you. I won't break his heart."

"Thank you, Cas."

"Of course, Dean. Just know that if you break Gabe's heart, I will hunt you down."

"Alright man. I won't."