(In French) No, the mademoiselle is not my girlfriend.
6 seconds sound clip from the Inglourious Basterds movie soundboard.
You can hear this line at 00:44:19 in the Blu-ray version of the movie.
Quote context
[...]
(In French) I thought I was just a uniform.
(In French) You're not just a German soldier. Are you somebody's son?
(In French) Most German soldiers are somebody's son.
(In French) You're a very luck girl, 'catching a brave war hero.
(In French) No, the mademoiselle is not my girlfriend.
(In French) Can you write 'Amour Babette'?
(In French) So you're a war hero. What did you do?
(In French) I was alone in a bell tower in a walled off city.
- It was myself and a thousand rounds of ammo, in a bird's nest against three hundred enemy soldiers.
[...]