Belinda Luscombe, who has written for Time magazine for 20 years on marriage and relationships, analyzed the state of modern marriages and recent scientific research to identify the main sources of problems that spouses face. It turned out that these were: the inability to quarrel, financial disagreements, children and close relatives, sexual problems, refusal of help and excessive closeness (when it seems that you know your partner as flaky). In her book, she offers a simple, workable, fun way to manage marriages and test relationships to find out why they are acting up - maybe just an oil change is enough? Spoiler: Being happily married and staying together is easier than you think.Published in Russian for the first time.