Why Him? Why Her?: How to Find and Keep Lasting Love is a fascinating exploration of the science of love by renowned biological anthropologist, Helen Fisher. In this book, Fisher takes a unique approach to understanding why we fall in love with certain people, and how we can use this knowledge to find and maintain lasting relationships.

The core of the book is Fisher's idea that we all have a particular "brain type" that influences our personality, behavior, and ultimately, our romantic preferences. These four types, which Fisher labels as the Explorer, Builder, Director, and Negotiator, are linked to specific brain systems that govern our emotions, cognitive processes, and biology.

Using compelling data and real-life examples, Fisher explains how each of these brain types approaches love and relationships, and reveals how they communicate, make decisions, and navigate conflict. She highlights the unique strengths and challenges that come with each type, and offers practical advice for people seeking to find and keep love with someone whose brain type complements their own.

Fisher's insights are not just academic theory; they come from years of research and investigation into the intricacies of the human brain and its relationship to love. She has conducted numerous studies, including brain-scanning experiments on people in love, which have revealed surprising insights into the way our brains work when we are under the influence of romantic attraction.

By the end of the book, readers will have a deep understanding of their own brain type and how it influences their romantic decisions, including who they should choose as a partner and how they can maintain a healthy and satisfying relationship. They will also come away with an appreciation for the complexity and mystery of love and the scientific efforts to unravel its secrets.

Why Him? Why Her? is a thought-provoking and engaging read for anyone who wants to know more about the science of love and how to find and keep lasting relationships.