Her reassurance does mean something to him, deep down, even if he's entirely convinced that she's wrong. He tries to shrug casually, though it comes out more as just a twitch of his shoulder.

It means something too that she also doesn't strip down right then and there; Firo realizes with some horror that that is probably the sort of thing Rey would do.

He sighs, "That'd be about half as bad in a different way..." Pretending she's a guy that is. Normally half bad would mean a good thing, but it still means pretty bad when you're dealing with something as heinous as being near a woman changing.

Even he's not sure if he's trying to make a joke about it or allowing himself to be honest with her. Maybe doing the latter through the former.

But he nods anyway, the motion somewhat awkward and jerky. "I'll just. Um, call me when you're ready."

One good thing about so few people from the first jump remaining is that he doesn't really have any other naked people to contend with in this area. He turns his back to Rey, wanders away several paces, stands right up against a wall, and covers his face with his hands.