"Why should I apologize to him when he's still with her?" Sam was being bitter about it. He just couldn't get how someone was able to take everything that they stood for and stomp all over it like that. It was selfish, what Castiel had done. As much as Sam half-wished that he and Ruby were still friends, there was still the logical part of himself that kept him from running off and demanding that they go off and have fries together. He had been betrayed. Castiel had been too. Why was he acting like it wasn't a big deal? Why had he simply looked over the fact that his girlfriend had tried to end the world that he had worked all his life to protect? It didn't make any sense. "I'm not talking to him, Faith. We're done."
"But it's -" He dragged a palm over his face, rubbing at it in irritation. He didn't want to argue. He was not going to argue. "It's not cheating if I did it all for you," he pressed, looking down at his drink in annoyance. That was arguing. Okay, time to move on. "Look, I'm really sorry that me talking to her is bothering you. I want to say that I'm gonna be able to stop, but I can't promise that. I don't know what I'm gonna do. All I know is that I don't want to see her screw anyone else over again and in order to guarantee that it doesn't happen I have to keep an eye on her. Doesn't mean I'm gonna run off and be best buddies with her, doesn't mean that I intend on going down the path I was on again. I just want to make sure that everyone is safe. And that she's not...not the person I always wanted her to be." Which was already proven true, considering, but with her pressing on about their friendship being real Sam couldn't help but feel unsure.