Reading this book will help answer the questions: What is love? Who will fall in love and who will not? Why will some love relationships endure and not others? How can one evaluate and improve a love relationship? Why does one love relationship dissolve more easily than another? How should one handle love dissolution problems? This is the most comprehensive and state-of-the-art work on the measurement of love. It includes descriptions of a theoretical paradigm and two love models, a common mythological framework for theory development and evaluation, an introduction to over 40 theories for love development, maintenance, and dissolution, the integration of research principles and strategies, the compilation of 26 popularly used scales, and illustrations of three empirical research programs in measuring love and intimate relations. The compilation of scales provides information on purpose, function, constructs, psychometric properties, subject response formats, and actual measurement items. This book complements Tzeng's most recent work, Theories of Love Development, Maintenance, and Dissolution.