"Good, because if one is bad, two wouldn't be any better."
Dean shifts his weight from foot to foot, kicking at the dirt, at everything around him, finally simmering down just a little bit. He's not a stranger to choices that aren't choices at all - his own was one he wouldn't pick ideally, but had to deal with. He just had to suck it up and do what was necessary, and it wasn't unreasonable to think that the same happened with Cas.
"I lost both of you, you know that?" Dean tips his head up, watches Cas with his face carefully blank. "Just like that."