You don't know how much time has passed in Hell. You wondered if he was okay, though Lucifer had already spent a millennium in the Cage before.

You'd had each other, Lucifer possessing you and wrapping your soul in his grace like a security blanket. But then Cas came to save you, and forcefully ripped you from him.

Now you were back in Hell to get him out, with the help of Crowley, of course.