About the book: The book discusses the principles of mate selection and gender issues - the roles of men and women. You will find answers to questions such as: ¿ What are the manifestations of masculinity and femininity? ¿ How to choose an ideal partner? ¿ Why do we choose similar partners? ¿ How do gender stereotypes affect harmony in a couple? ¿ What is the danger of toxic masculinity? ¿ How to get to know your partner and protect yourself from pickup? ¿ What mistakes do people make when choosing a partner? ¿ How to determine compatibility with a partner? Choose the best partners!