«But if Beauty gets you, ya…»

DENHAM: Oh, you have gone soft on her, eh? I’ve got enough troubles without a love affair to complicate things. Better cut it out, Jack.
DRISCOLL: Love affair! You think I’m gonna fall for any dame?
DENHAM: I’ve never known it to fail: some big, hard-boiled egg gets a look at a pretty face and bang, he cracks up and goes sappy.
DRISCOLL: Now who’s goin’ sappy? Listen, I haven’t run out on ya, have I?
DENHAM: No, you’re a pretty tough guy, but if Beauty gets you, ya… Huh, I’m going right into a theme song here.
DRISCOLL: Say, what are you talkin’ about?
DENHAM: It’s the idea of my picture. The Beast was a tough guy too. He could lick the world. But when he saw Beauty, she got him. He went soft. He forgot his wisdom and the little fellas licked him. Think it over, Jack.

Merian C. Cooper and Ernest B. Schoedsack, King Kong (1933)

http://www.tcm.com/mediaroom/video/219263/King-Kong-Movie-Clip-Beauty-and-Beast.html