Get the Summary of Amir Levine and Rachel Heller's Attached in 20 minutes. Please note: This is a summary & not the original book. Original book introduction: In Attached, Amir Levine and Rachel Heller take a scientific approach to explain how romantic relationships work and why some are more dysfunctional than others. They use real-life stories as well as cutting-edge research to educate us on why some people are able to thrive in their relationships while others seem trapped in a vicious cycle of perpetual disappointment. The authors show us that people in relationships can be grouped into three main attachment styles: secure, anxious, and avoidant. By finding out which category you and your partner fall under, you stand a better chance of making your relationship succeed.