2. Big’s affair with Carrie
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Carrie has always been one of the most fun characters on Sex and the City, and she always did something to surprise the audience. That’s why one of the best moments on Sex and the City, and one of the most unforgettable, is the reveal of Carrie’s affair with Big. Cheating on her boyfriend with a married man? It’s one of the most intense moments of Sex and the City.