All I know is, I'd like to have spent two minutes in Cary Grant's arms.
Then the iconic scene "From Here to Eternity". It's still hot.
One of the great movie endings is the New Year's Eve scene from "When Harry Met Sally"; memorable lines and a memorable kiss.
Watching two people fall in love on screen is electric. "To Have and Have Not" gives it up in spades. Whew! Lauren Bacall was one gorgeous dame.
Now, this is not the scene I wanted from "Gone With the Wind". That scene comes at the end of the first part of the movie after Rhett has helped Scarlett, Melanie, her newborn baby and Prissie escape the burning of Atlanta. He leaves them on the crest of a hill overlooking Tara as he explains he's joined the war effort on the side of Confederates and he asks her to kiss him as a soldier going off to war. She complies momentarily then pushes him away. That was probably the scene over which most women swooned back in the day.
I'll settle, instead, for a funny scene from "GWTW" below when Rhett doesn't kiss her. . .