"Oh, wow, you sang about it. That makes such a big difference. I'm glad you put in so much effort to keep your mouth shut, Ruby, I really am." It was a loophole all right and he was calling her out on it too. He didn't care who she was. If she was a friend of his, she'd treat him with respect; with as much respect as he'd give her. And considering that she was on the scale of things that he usually liked to kill? Respecting her was a big, big thing, even for him.
Fists balled up at his sides, Sam glared off at her and debated on how to respond to that. He had thought about it. Every day since she had mentioned the entire thing, Sam Winchester had thought long and hard about how it would influence his life. The upsides, the downsides. There were so many on each end of the scale and he was pretty damn certain that he'd never be able to figure out which way he wanted for it to tip when all of this was said and done. Which was why avoiding it all completely was the best answer. And lying. He could lie to her. She could break promises to him. Fair trade.
"I don't think about it at all. Not even once after you suggested it the first time."