: Typically focuses on a protagonist—often a spouse—who feels neglected or trapped in a routine marriage and seeks excitement elsewhere.

The line is crossed not with a grand gesture, but with a simple touch of hands over a shared glass of wine. What follows is a frantic, whispered encounter fueled by months of suppressed attraction. Every creak of the floorboards feels like a judgment, yet they can't stop.

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: The plot usually hinges on a moment of discovery or a hidden affair that threatens the stability of the characters' lives.