These on-screen couples were the OGs of rom-com clichés.

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Honorable mentions: 10 Things I Hate About You, Red, White & Royal Blue, Sweet Home Alabama, and The Hating Game. 

Honorable mentions: When Harry Met Sally..., My Best Friend's Wedding, Love, Rosie, and Just Friends. 

Honorable mentions: Easy A, Anyone But You, Purple Hearts, and Just Go With It. 

Honorable mentions: Titanic, Brokeback Mountain, and Portrait of a Lady on Fire. 

Honorable mentions: The Graduate, The Age of Innocence, Sabrina, and The Wedding Planner. 

Honorable mentions: The Sound of Music, Grease, and It Happened One Night. 

Honorable mentions: The Holiday, Serendipity, Before Sunrise, My Big Fat Greek Wedding, and Maid in Manhattan. 

Honorable mentions: About Time, Somewhere in Time, The Time Traveler's Wife, and Kate & Leopold. 

Honorable mentions: The Notebook, Persuasion, and The Best of Me. 

Honorable mentions: The Proposal, Set it Up, Jerry Maguire, and Laws of Attraction.