The category of "Marriage" in books encompasses a wide range of literature that explores the institution of marriage, including its joys, challenges, and complexities. These books may delve into the history and cultural significance of marriage, examine the psychological and emotional dynamics of relationships, or offer practical advice and guidance for couples navigating the ups and downs of married life. Whether exploring the intricacies of communication, intimacy, or conflict resolution, books in this category aim to provide insight and support for individuals seeking to build and maintain strong, healthy, and fulfilling marriages.

The category of "Sexual behavior" in books encompasses a wide range of topics related to human sexuality, including sexual health, relationships, gender identity, sexual orientation, and sexual practices. Books in this category may explore the psychological, social, and cultural aspects of sexuality, as well as provide practical advice and guidance for individuals seeking to improve their sexual experiences. Whether exploring the complexities of sexual desire or providing information on sexual health and safety, books in this category aim to educate and empower readers to make informed decisions about their sexual lives.

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