"I'm not talking to Castiel, Faith," Sam told her, "plain and simple. There's nothing that I could possibly say to him that he shouldn't already know. Ruby tried to end the world. It's his job to protect said world. I don't think he's doing a very good job if he's still hanging around her all the time. It's not my responsibility to keep him from her. It's his. And..." He waved a hand in the air, a quiet indication that he was referring to God as well. "I'm not trying to stir up the pot anymore than I already have."
He was hurting her. Again. Sam sort of wished that he had a buzzer for when that happened. Something to warn him whenever he was doing something that was going to offend his girlfriend so that he'd know when to stop. Sam breathed out slowly and ran his fingers through his hair, not quite sure on how to react to that beyond expressing another apology. "I'm sorry. I didn't mean for it to happen." She said that she already knew that, but he wanted to make it clear. He didn't to hurt Faith and it bothered him a lot when he did, even if it was unintentional.
"She screwed me over," Sam pointed out, "but Ruby never screwed me." He hoped that Faith believed him on that note. Considering how disgusted he was with the idea of sleeping with a demon at all, Faith should have been able to get that he never would no matter what Ruby said to him. Besides, disgust or not, he was still loyal to Faith. It was one of the reasons why he had been so set on doing all of the demon blood drinking in the first place. He wanted to keep her safe and make her happy. Which turned out real well, Sam thought moodily, poking at the ice in his glass with his straw.