A/N: Hope you guys enjoy the next part
After they'd eaten and Dean had made sure Sam was ready for bed, he tucked his baby brother up in the bed sheets, sat on the side of the bed and gestured for Castiel to join them. The angel was wearing his too big trenchcoat again –Dean figured it was because he missed being tall- and he stumbled slightly as he shuffled his way over to the bed.
"You wanted me?" he asked.
"Sit down, Cas," Dean patted the bed next to him gently and Castiel sat down obligingly, like a soldier following orders. Like Dean following his father's orders. "Er, so, will you tell us what happened? With you and Gabriel?"
"Yes. I shall tell you what happened." He paused. "We were hunting one of Hell's Knights. Hell's Knights are very pure, very powerful demons who were handpicked by Lucifer to be some of the first fallen demons. Gabriel and I had been tracking one, and we'd finally cornered it after months of chasing. However, this one was very cunning, she… she got the better of us. I lost concentration, for just the fraction of a second, and she attacked. It was my fault she got away. Gabriel had to find me a new vessel, a new body, my... my grace was dying. This was the closest there was. And then, Gabriel dumped me on you guys so I wouldn't hold him up while he finished it." Castiel looked down as he finished his story. Dean and Sam stared at him until he got up from where he was sat, walked away and stumbled over the too long ends of his coat.
Dean tucked Sam tightly into bed, then made his way over to the couch. He sat next to Cas, who wordlessly turned the channel to the news. They watched in a companionable silence. John wasn't mentioned. Nothing new about anything that could be vampire related was mentioned.
The news programme ended and Castiel turned the television off and took a hold of Dean's hand. They got up and walked over to the other bed in the room, as had become tradition for them. They lay there together, warm beneath Cas' trenchcoat. His wings came out and Dean ran his hand over the fluffy black feathers. "You know, Cas, it isn't your fault. And if it is, then we all make mistakes. But if you're family, you forgive each other, because that's what family does," he whispered to the smaller boy. The angel started shaking, and Dean knew he was crying. He cleared his throat and quietly sung "Carry on my wayward son, there'll be peace when you are done, lay your weary head to rest, don't you cry no more."
"Thank you, Dean. That was very sweet of you."
"You go to sleep, Cas. I'll watch over you."
The angel nodded slightly and curled in closer to the Winchester, nuzzling Dean's chest with his nose. "Goodnight, Dean," he whispered.
"Goodnight, Cas." Dean kept stroking Castiel's feathers as he kept watch over his brother and the angel. And Cas feigned sleep -he did not need it- but he made sure that Dean was always safe.