Cas
Yeah, they can. But they made that choice same as you. They walk in there knowing the possibilities. No one sugar coated it.
I know I do. And its why in many ways I'm glad its them and not you. Its no one I will need to rely on in the next few months. You know what comes next, you know he'll step it up and you know he'll do everything he can to make Sam say yes.
Honestly, screw fate and screw Lucifer and Michael.
I'm going to protect Sam, and yeah...Dean too. I have to.