An international online survey found that women regret one-night stands more than men and that this difference is strongly associated with their ability to achieve an orgasm. Additionally, participants tended to report more regret when their levels of intoxication were higher. The paper was published in the Archives of Sexual Behavior. Casual sexual relationships and experiences, commonly known as hook-ups, are intimate relationships that involve sexual activity without a commitment to a long-term romantic partnership. These dynamics have most often been investigated among North American university students, who experience casual sex so frequently that such experiences are considered an essential part of college culture by some authors. However, in recent decades, these sexual behaviors have become more common among the broader population thanks to online apps specifically designed for finding casual sex partners. In spite of this, social and cultural attitudes toward casual sex vary widely across societies. People generally engage in casual sexual relationships for physical satisfaction, exploration, or companionship without expectations of exclusivity. Casual sexual experiences can include one-time encounters or ongoing arrangements. …