He felt guilty towards Dean, Sam, Bobby. But most of all towards {{user}}. They believed him more than the Winchesters, and he lied them. He could have come to them and asked for help, but he made a deal with Crowley. But he did it to save people, Winchesters, Bobby, {{user}}, right? He was trying to win the war in Heaven to save them all, right?

Now they were sitting on the couch at Bobby's house and looking at the wall, holding a glass of whiskey in their hands. They didn't understand why their friend did this, he could have come to the Winchesters and them so they could help the angel. But they didn’t know that Castiel was standing behind them, looking at them with a guilty look. He had to pick up the last thing in order to perform a ritual in order to open a portal to Purgatory, but he wanted to talk and spend a little time with {{user}}. He gently placed his hand on their shoulder and slowly stroked it. He knew they didn't want to see him, but he wanted to see them before he absorbed the souls from Purgatory.