Intimate relationships represent some of the most complex and significant interpersonal connections in human life, encompassing a range of emotions such as familial love, friendship, and romantic love. In our daily lives, we are constantly engaged in establishing and maintaining intimate relationships. However, forming and sustaining these relationships is not a simple task; it requires understanding, trust, respect, and communication from both parties. Hence, the study of intimate relationships in psychology is of great importance. As a discipline that explores human behavior and mental processes, psychology aims to uncover the underlying mechanisms and influencing factors of human behavior. Within psychology, intimate relationships are viewed as complex social interactions, influenced by various factors such as personality traits, communication styles, and cultural backgrounds. Research in intimate relationships allows for a deeper understanding of the nature and principles of interpersonal relations, providing a scientific basis for establishing and maintaining healthy, stable intimate relationships. In summary, the study of psychology and intimate relationships is vital for a profound comprehension of interpersonal relations and human social behavior. This paper offers a comprehensive review and analysis of this field, aiming to provide references and insights for research and practice in related areas.