June Hunt, does a wonderful job of defining and giving examples of codependency. In this 94 page booklet, June explains the characteristics and causes of codependency [relationship addiction]. This is from a faith based perspective and she illustrates what causes repeated cycles of this behavior.
To conclude, June takes us through recovery steps to the solution. Through this book you can learn how to move toward healthy interdependent relationships. This little jewel is worth a repeat read several times per year as a quick self-check and proactive preventative maintenance measure.