I know I am such a dork, but it won’t matter if I watch that movie and scene a million times. It still makes me cry every single time.
First thing I thought of.
JThunder, too. 
I assume silent films are probably not eligible, since they often did it without words. For instance, when Buster Keaton kisses his girlfriend in The General after he nearly throttles her.
And, of course, Fred Astaire and Ginger Rogers used to say it with dance.
“You had me at hello” is a more recent example.
“You know you don’t have to act with me, Steve. You don’t have to say anything, and you don’t have to do anything. Not a thing. Oh, maybe just whistle. You know how to whistle, don’t you, Steve? You just put your lips together and… blow.”
as well as
“It’s even better when you help.”
“If you need me, just call. You know how to dial, don’t you? You just put your finger in the hole, and make little circles.”
SOME PIG, written in a web by Charlotte.
Fuck you, Sarah.
If the cops weren’t here, I’d spit in your face.
By Bruce Willis in The Last Boy Scout
You must be using some special definition of love that is synonymous with thread-shitting.
“This could be the beginning of a beautiful friendship.”
From BtVS: The Chosen:
Buffy: I love you.
Spike: No you don’t, but thanks for saying it. Now go. I want to see how it ends.
The brothers Winchester from Supernatural:
Dean: Bitch.
Sam: Jerk.
You obviously have never seen The Last Boy Scout and have no idea what you’re talking about. In the context of the film, Willis’ wife had expressed discontent that he never expressed ANY emotion, even when he caught her cheating on him. She specificall says he should say something like “fuck you…etc” which he does after they reconcile at the end of the film.
Yo Adrien!!
Rocky Balboa, Rocky
Gimme some sugar!
Hail to the King baby!
Ash, Army of Darkness
Umm, no. If you’d seen the end of the movie, you’d know he was saying he loved her.
“I can never die.” -Team America: World Police
‘‘If I don’t make it, tell my wife… hello.’’
The Neutral Ambassador, Futurama. (Sorry, I’m psyched for the DVD…)
In all seriousness, I have to take a quote from one of my favorite movies ever, Goodwill Hunting.
Man, I’m getting misty eyed just thinking about it.
Seconded.
I think the whole relationship is pretty effed up, and that the Prof. is a jerk of the first water, but…
“Eliza? Where the devil are my slippers?”
I do like Roger Ebert’s comment from here, that he’s not sure whether Eliza stayed to hear anything else after that. 
In Pretty Woman, Julia Roberts the hooker has told Richard Gere that she won’t kiss a john on the lips. Later in the movie, they are having sex on the piano, and she permits him to kiss her on the lips.
From Cinema Paradiso
The young boy has gone away for a short time for his army enlistment. After a year away, his little town has changed. He dosn’t know what to do but he does want to be near his old blind friend, and really his father.
The old man makes the boy lean in and grabbing the back of his neck says.
Go away and never come back. Don’t let sentimentality for this small town drag you down. I’m tired of talking to you. I want to hear other people talk about you.
Of course there is always the end of Ol’ Yeller.