This book goes into the psycho-biological aspects of dating. Backup up by real neuroscience, the chapters chronicle how the brain works in a dating and courtship environment. The author explains how lots of "feel good" hormones are released when two people first meet...but that these chemicals can and do wear away over time. Readers are urged to thoroughly vet any and all potential partners before getting serious. Since those "feel good" chemicals do go away, people should really take the time to ask the tough questions of potential mates. They should also meet friends and family to determine what others think of this new person. There is even a section of breakups, as well as making long-term committed relationships. This book is quite liberal in that it talks about homo-sexual couples as well as hetero-sexual couples. I do not agree with all the advice in the book (such as living together before married), but I will say the book offers some excellent insights into the relational brain.