I knew it two weeks after I left you... What a terrible mistake I'd made.
6 seconds sound clip from the The Fortune Cookie (1966) movie soundboard.
You can hear this line at 01:21:54 in the Blu-ray version of the movie.
Quote context
[...]
- She may not be a raving beauty, but then, I'm no Mastroianni, either.
- You know what I'm trying to say?
- Yeah.
- Oh, boy, oh, boy. Look at this.
- What?
- I think I'm going out of my mind. I can't watch it anymore.
- What?
- I knew it two weeks after I left you... What a terrible mistake I'd made.
- Then when I heard about your accident, I didn't stop to think. I just called.
- I'm glad you did. At least something good came out of it.
- You know what I did? I went down to Lake Erie to throw my wedding ring away.
[...]