- HD 1080
- Runtime: 95m.
- Status: Released
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- Languages: en
- Country: United States of America
- Director: Richard Marquand
- Stars: Karen Allen, Thierry Lhermitte, Christopher Cazenove, Hutton Cobb, Michael Mellinger
- keywords: paris, france, seduction, romance, extramarital affair
- Production_studio: United Artists, Metro-Goldwyn-Mayer
- Slogan: They were having so much fun in Paris. If only they could keep from falling in love.
- providers: Amazon Prime Video, fuboTV, Epix Amazon Channel, MGM Plus Roku Premium Channel, MGM Plus, Amazon Prime Video with Ads
- The Until September is featured in the top rankings of 1984
- #59 in Top Romance Movies of 1984
American tour guide Mo Alexander misses her tour group, and then her flight out of Paris. Stuck in the city of romance, Mo runs into the very suave -- and very married -- Xavier, who attempts to seduce Mo while his family is out of town. His charms prove hard to resist, and Mo succumbs, though her conscience weighs heavy. Soon their bickering romance of convenience takes a serious turn, and, in spite of himself, Xavier finds he's falling in love.
