That's exactly right, [ he says without missing a beat, leveling a smile at her. ] It was you, without a doubt.

[ is that actually what he did? no, probably not. Impey was supposed to be here, but his car broke down (surprise) and so, Lupin had to improvise. Does he say it anyway with complete and utter sincerity? Yes, absolutely. ]

A moonlight drive is hardly worth the time without a beautiful woman to spend it with, you know.

[ as if to punctuate his point, he glances up out of the car briefly towards the skyline. ]