* MethodActing: When Annette slaps Sebastian in the face [[spoiler: during their breakup scene]], the slap wasn't supposed to happen. Both Ryan Phillippe and Creator/ReeseWitherspoon became caught up in the intensity of the scene that she impulsively slapped him. Sebastian's look of shock was genuine [[spoiler: and Ryan even threw up after the scene was finished filming]].
* WhatCouldHaveBeen: The original ending, in script form, can be viewed [[http://www.dailyscript.com/scripts/cruel-intentions.html here.]]

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