Despite the utter insensitivity of reminding someone of the torture they've suffered, Firo doesn't quite realize he's erred until he sees that look. "Sorry." He winces and ducks his head; it's already gone by the time he looks up, making Firo wonder if he just imagined it.

Either way, he's glad to see the smile, even if he doesn't manage to return much of one himself. Anything else on Jack's face looks out of place.

He nods as he listens, privately doubting if anyone who's wound up here can ever classify their bad luck as 'rare,' but this time he has the good sense to keep his comment to himself. At least for now.

He accepts the box dumbly and shuffles aside for Jack to enter. "Um, thanks?" As he looks at it, though, he realizes that he is hungry. Both for food and for company, though he's not quite feeling like he deserves either. His gratitude is more heartfelt this time, "Thank you."

Letting the door swing shut behind him, he turns to Jack, grasping for something to say that won't upset either of them. He settles for trying to joke, "I should probably warn you that you could find better company somewhere else."

Which is his attempt to express how much this means to him. Jack really is a good guy, isn't he?