This is a 2-book bundle, consisting of these books:

Book 1: In this guide, you will learn more about co-dependency. You will also discover the definition of counter-dependency, and all the effects that these two phenomena have on relationships. This way, you'll be better prepared if you ever find yourself in such a relationship, whether that's an intimate one or a business-related one.

Book 2: Most people have experienced simple manifestations of jealousy, but there are exceptional cases and disorders that must be mentioned. In this book, some of those brain functions that border on insanity will be discussed and explained.

Aside from that, several chapters of the book refer to jealousy problems in marriage and other relationships. Apparently, this problem is more common than many presume it to be, so it is worth mentioning.