Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I didn't know sex could get any better until I read this

This book has changed my life. I picked it up on a whim, but I was totally unprepared for what it had to teach me as a woman. I've been sexually active since 1971 and thought I knew everything about my own body's sensations. When my husband tried out some of the ideas in this book..... I was totally amazed, not to mention thrilled. I really appreciate the point the authors make about how a woman should be getting as much satisfaction from a sexual encounter as a man. It has revitalized my marriage. Every man should seriously study this book if he really loves his woman.