Like most distinct film genres, the rom-com has many tropes from the meet-cute to the happily-ever-after.

It’s hard to resist the promise of a second chance.

After a case of mistaken identity, she ends up falling for Astaire’s Guy Holden.

THE GAY DIVORCEE, from left: Ginger Rogers, Fred Astaire, 1934

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With a Cole Porter score, the film features a beautiful dance number to “Night and Day.”

Jimmy Stewart had just come off a star-making role inMr.

The American Film Institute lists the movie as one of the top 10 romantic comedies ever made.

THE AWFUL TRUTH, from left: Irene Dunne, Cary Grant, 1937

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Trying to buy himself time, Steve feigns insanity, but Susan calls his bluff and has him committed.

Hackensacker III (Rudy Vallee) to finance his projects.

The film was another hit for writer-director Preston Sturges.

THE PHILADELPHIA STORY, from left: Cary Grant, Katharine Hepburn, James Stewart, 1940

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Cary Scott (Jane Wyman) is a middle-aged widow who leads a country club-set lifestyle.

Her friends and children expect her to date boring, perfectly respectable Harvey (Conrad Nagel).

Todd Haynes draws directly from Sirk’s themes and palette in bothFar From HeavenandCarol.

LOVE CRAZY, William Powell, Myrna Loy, 1941

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THE LADY EVE, from left: Henry Fonda, Barbara Stanwyck, 1941

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THE PALM BEACH STORY, from left: Joel McCrea, Claudette Colbert, 1942

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PHFFFT, Judy Holliday, Jack Lemmon, 1954

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ALL THAT HEAVEN ALLOWS, from left: Rock Hudson, Jane Wyman, 1955

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WHEN HARRY MET SALLY, Meg Ryan, Billy Crystal, 1989. (c) Columbia Pictures/ Courtesy: Everett Collec

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