Disclaimer: I do not own any of the characters or the Supernatural references.

Warning: Tis agnsty and lots of self loathing... will get more slashy later on.

Summary: "One week and Cas is starting to believe that the wall is staring back at him." Life in the psych ward with Lucifer as his constant companion, Meg as his nurse, and Dean... well being Dean.

Cas stared at the wall. It had been a week since Sam and Dean left. A week of Lucifer persistently talking to him. He never said anything back but that didn't deter his older brother. Cas didn't have to eat or sleep and he could pretty much ignore everything, but Lucifer seemed determined to torture him. Which left talking, lots of talking. So, Cas was left to stare at the wall for the past week while his fallen brother talked, yelled, and screamed at him. One week and Cas is starting to believe that the wall is staring back at him.

"They've left you brother. They always seem to leave you behind."

He shouldn't listen. Cas knows that Lucifer is just a hallucination and that he words could not be trusted. That being said it still hurts. The slight truth in the statement hurts worse than every other physical wound he has encounter. That even includes having his body blown up by the very brother who is tormenting him now.

"You know they probably don't even care about you."

Cas bites his bottom lip in order to stop saying something. He wants too though. Father knows how much he wants to deny what Lucifer has said, but speaking to him would only make things worse. It would only spur Lucifer on. If he's honest he doesn't even know if he could deny the claim. Cas has ruined the friendship that he once held so dear. He hurt Sam. He betrayed Dean. He wouldn't blame them if they didn't care for him anymore.

"Oh don't be daft little brother. Do you honestly think that they ever cared for you? Look at the facts they kept you around to have a little Angel ammo on their side."

Snapping his head to the side, Cas finally looked at his own personal Devil. Lucifer still looked like his vessel Nick. The evil bastard was leaning against the wall smiling. Cas glared in response. Do not speak to the Devil. Stop acknowledging him. If Sam could survive months of Lucifer, Cas is sure he could handle him as well. It might take a while to get use to his brother's constant chatter, but this is his punishment. A lifetime with a constant reminder of all of his mistakes, he deserves this. Divine punishment indeed.

Lucifer disappeared only to pop right back beside him. "You never saw it did you Cassie? Oh you naïve little fool. They never called you unless they needed something from you. They didn't even notice you were fighting a war until it inconvenienced them. Now do you really think they cared for you or for what you could do for them?"

It was like Lucifer had stabbed him repeatedly. Every wayward doubt Cas had thought throughout the years with the Winchesters was getting thrown back at him. It hurt. His shoulders slumped and he hid his face in his hands. It was only the first week and he already wanted to die. Well he wanted to die anyway but the little devil over his shoulder wasn't helping. Cas felt so alone. He just wanted to give up.

Lucifer placed his hand on Cas' shoulder and leaned in close. Cas felt lips by his ear as the fallen angel whispered "Don't look so sad little brother you still have me." A wave of sadness washed over him and for the first time in a long time Cas let the tears run down his face.

A/N: Ok so this is my first fanfic and i'm not sure how it's going so reviews are nice. Good or bad helps me alot and I love to hear others opinions on what they would like to see happen.