I'm going to ask you once more. Why don't you let me help you?
3 seconds sound clip from the Love Affair (1939) movie soundboard.
You can hear this line at 01:09:44.454 in the Blu-ray version of the movie.
Quote context
[...]
- Let me tell him. I'll go get him.
- It's tough. The first time you're able to get out and you have to meet him.
- Well, the show's over. The boy got the girl. Shall we go?
- Seems terrible taking you home with everybody going out.
- I'm going to ask you once more. Why don't you let me help you?
- Well, then certainly he ought to know.
- No, because if he found out, he'd want to do something about it.
- No, unless I can walk to him one day... and when I say walk, I mean run... he'll never know.
[...]