I read the book Attached, by Amir Lavine a few years ago. It was amazing. Since then I've read quite a few books in the hopes of learning more about attachment disorders; anxiously attached, avoidantly attached, and securly attached people. This book dives fearlessly down that rabbit hole. It explains panic of abandonment from even the most unhealthy relationships. Why someone calls their significant other 15 times in 20 minutes. Why some people can't give up on a significant other who is repeating the same pattern of undermining or failing to support your strengths and self-confidence. It explains the emotional roller coaster kind of relationship and how it is common and a troubled love relationship. He says positive emotions, like joy, trust, and love, may alternate, sometimes rapidly with disturbing emotions such as depression, jealousy, and hate. He describes when a person feels inadequate, incomplete, insecure, and unhappy without a particular other person, he becomes dependent on the other person to make them feel adequate, complete, secure, and happy. He even explains jealousy, and how it is particularly important in to context of interpersonal addiction because it can lead you to overvalue and therefore remain with a person who is bad for you. And one of the most important steps you could take in loosening the addiction is becoming aware of how much you're jealousy can cause you to elevate your partner and to recognize that it is possible to feel jealousy towards someone you don't love, whom you don't like, and even towards someone you heartily dislike, if attachment hunger and other early feelings are at work. This is one of the best relationship and self help books I've ever read.