Then why not?

3 seconds sound clip from the The Notebook (2004) movie soundboard.

You can hear this line at 00:53:00 in the Blu-ray version of the movie.

Quote context

[...]

- Ally ally ally ooh. Olly olly olly ooh. Whooly ooh.

- See Allie, I think you have to marry me. I think you need to marry me. Yes you do. Because if you do, you parents will always know the unhappiness that you feel for not being able to disappoint them.

- I think you may have overlooked one minor detail.

- And what's that?

- Well, you see you have to get their permission first.

- And I think you may have overestimated their affection for you.

- Is that right?

- Mm-hmm.

- Oh, I don't think so.

- Then why not?

- Oh, 'cause I asked them already and they said yes.

- What? (4)

- One more thing. I love you. Will you marry me, honey? I know I kid around a lot, but I'm crazy about you.

- Marry me? Make me the happiest man in the world.

- Yes. Yes!

[...]