The grandfather of the "enemies to lovers" trope. Fitzwilliam Darcy and Elizabeth Bennet invented the "Big Ass Relationship." Mr. Darcy walking across the field in the morning mist (1995 BBC version, obviously) is the most romantic shot in history. Their storyline is about overcoming pride of status and prejudice of perception. "You have bewitched me, body and soul." Enough said.
( Titanic ): A whirlwind romance born across strict class divides. Their short-lived bond felt big enough to span a lifetime.