"Why You Are Acting That Way in Your Love Relationship" is a love psychology book written by N. Stephen. The Author derived a new philosophy, and expressed a pyschological state of love, the nature, and existence of love relationship in a different view. For you as a being, it exposes the two strong factors responsible for your temperament (i.e. quality of mind) over the way you behave, reciprocate and response in your love life and relationship. These two strong factors are in one hand "the state of your conscious and subconscious mind" and in the other hand, a popular economic concept called 'marginal utility'. The purpose of the book is to reveal the forces behind your love relationship, and as well let you know why you are acting that way in your love relationship and life. It is a counseling book for love relationship, and a guide to build and manage ones love life and relationship. It is expressively on the notion of "whys, answers, and reasons," and it may expose your love relationship strengths and weaknesses.