- You didn't have to do that.
- I thought I did.

5 seconds sound clip from the The Grifters movie soundboard.

You can hear this line at 00:33:02 in the Blu-ray version of the movie.

Quote context

[...]

- Do you know why my mother hired you?

- Ha, yes. I'll come every afternoon and make sure you feel...

- She hired you for me to fuck. To keep me away from bad influences.

- Isn't that right, Lilly?

- It is not.

- Mrs. Dillon, perhaps I...

- Go wait in the hall! Don't go away!

- You didn't have to do that.

- I thought I did.

- So you won't take a thing from me, is that it?

- Sex?

- I'm not offering you sex, you little punk!

- That's not what I meant. For Christ sake, Lilly. You're just throwing that wall flower on me 'cause you don't like Myra.

- Myra is nothing! She's less than nothing.

- Why does she bug you? You jealous? Of what?

[...]