休闲性行为（英語：Casual sex），或稱隨意性行爲、非正式性行爲、無負擔性行爲，是发生在浪漫關係外的合意性活动，意味着性伴侶之间没有承诺、情感依恋或熟悉的关系[1][2]。休闲性行为包括休闲约会、一夜情、性交易及交換配偶等。
参考文献
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