Thread: Where is this quote from? "Billy cleared his throat, I think you're wonderful."?

I saw this quote on tumblr: http://www.thethingswesay.com/img/3571.jpg
and I would really like to know where it's from. Thanks

Billy cleared his throat.
"I think you're wonderful."
"You're just saying that."

"No, I'm not."
I'd never been told something like that before. I didn't even know what to say.

Billy Madison. A 1995 movie