Attitudes towards sex, marriage, divorce are constantly changing and at the same time they remain constants of human civilization. In the book "On marriage and extramarital life" journalist Olga Kolobova and archaeologist Valery Ivanov, writing under the common pseudonym Oleg Ivik, summarize their many years of work on these topics. Here we have a fascinating history of marriages, divorces and sexual traditions, which the authors trace for many centuries: from Ancient Egypt to the present day. Myths and rituals, complex wedding rules and legal curiosities, marriage rites of Ancient Rome and Ancient Russia, China and Polynesia - the huge coverage of the material in this book is combined with a light and fun language that sometimes recalls the "Universal History processed by Satyricon" . Attention! The book contains profanity.