[ohhhh, okay. that makes more sense to her, to explain it that way - he is fire, the way she's shifting. he just is the thing, it's just easier to say the shorthand.

she nods a bit.]

You are fire. [she echoes, thoughtfully.] Cool. Not to be nosy or whatever, I just gotta know the limits, right? You can know all mine. So we really got each other's backs in a fight.