Disclaimer; I do not own Supernatural.
Summery Sam thinks about Cas in the hospital. Friendship piece.
Sam starred down at Cas with empathy because no one else in the world but him could understand what Cas was going through right now. Cas had saved him, had took his crazy, only having to deal with it himself now. He was very grateful to Cas, since if Cas hadn't taken away he would have died. Yeah Cas had broken his wall too, but Sam doubted if he could have kept from the scratching on the wall for the rest of his life however long that would be. Sam had wanted to comfort the angel but every time he got close Cas scooted away from him starring at him in fear. So he was standing against the farthest wall from Cas looking at him.
It was funny that Cas would do this for him, that Cas had tried to take him out of the Cage, even though he had failed. That Cas had risked his life to whip them back to the future so save him, and Dean too so that was probably a good part of it. Cas had hated him the beginning, of course back then he had been drinking demon blood and naturally an angel would hate him for that. But even after he had gave it up Castiel had still called him an abomination, and the boy with the demon blood. He knew that Cas only talked with him because he was with Dean but Cas hadn't liked it.
Perhaps he only did the things he did because of guilt. Guilt that he let Sam out of the panic room when he started the apocalypse and guilt that Sam had spent time in the cage because of it, and guilt because he had broke the wall in Sam's head, and guilt at releasing the Leviathans.
Part of him didn't think so though, part of him thought of when he had called Cas when he had gotten his soul back, It had only been him and Cas in the room and Cas had tried to hug him. Sam hadn't been able to seeing as for the past 180 years he had saw Lucifer blow him up again and again seeing Cas alive and well made his nauseous so he sat down. Cas had looked a little hurt by that his eyes flicked again to Cas now.
"Cas." he said softly because he was pretty sure he wouldn't get a response anyways even if he talked louder. "Cas, thank you for fixing me, I would have died if it hadn't been for you." the angel said nothing still starring at nothing in fear. "Thanks for trying to get me out of the Cage, even though it didn't work out the way you planned. You know what you did for me will go a long way with Dean. Me and you." Sam laughed. "We both screwed up, I started the apocalypse and you let the Leviathans out. It should be a sitcom Angel-dude and demon-guy." he laughed again bitterly. "We're going to get them for you Cas." he said seriously this time. "And will find a way to save you from this." he said earnestly. "I want you to know... I forgive you for the Leviathans.. if that is in my right to do so. Your stupid thing was better then my stupid thing, at least you killed Raphael and stopped him from getting Lucifer and Micheal out. At least you knew when to stop." Sam said with humorless laugh. "Cas-" the door opened up and Dean walked in with Meg. He really did like the idea of leaving Cas with a demon even one Cas had kissed.
"Sam we've got to go." Sam straightened up from the wall and made his way over to Cas.
"We'll be back okay?" he said as calmly as he could. It felt wrong leaving him there after all he had saved Sam's life but they couldn't. He left the room and Dean followed him out.