This is the classic book on codependency. Everyone should read it. This book is much better than the official literature provided by Codependents Anonymous. An excellent book of daily readings for codependency. Sometimes what passes for love is really a form of addiction.
Addictive love is compulsive, bringing destructiveness and misery instead of joy.
If you are in the clutches of addictive love, this book can help you get out of the relationship and ease you through withdrawal. Both are good, of course. This gives a very insightful picture of the love addiction dance, both from the perspective of the love addict and love addict's partner. It explains what underlies love addiction. It's very good, and talks about love addiction as well as sex addiction.