That's all you ever meant to me until a minute ago when I couldn't fire that second shot. I never thought that could happen to me.

15 seconds sound clip from the Double Indemnity movie soundboard.

You can hear this line at 01:40:03 in the DVD version of the movie.

Quote context

[...]

(Gun fires)

- You can do better than that, can't you, baby? Better try it again. Maybe if I came a little closer?

- How's this? Think you can do it now?

- Why didn't you shoot again, baby? Don't tell me it's because you've been in love with me all this time.

- No, I never loved you, not you or anybody else. I'm rotten to the heart. I used you, just as you said.

- That's all you ever meant to me until a minute ago when I couldn't fire that second shot. I never thought that could happen to me.

- Sorry, baby. I'm not buying.

- I'm not asking you to buy. Just hold me close.

- Goodbye, baby.

(Gun fires twice)

[...]