Men and women are basically entirely different species. The book focuses on improving relationships between men and women understanding the communication style and emotional needs of each gender difference between dating and love yes, they are very different. Relationships cannot and will not survive without clear, concise communication. If you are not being open and honest with your partner then is your relationship really a relationship at all? When there is a lack of communication, things become one sided and either partner may start to feel like the other does not want to be in the relationship anymore.
It can happen to anybody at any time. Do you know them? There is not just one difference.
Are You Just Dating or in a Relationship? Why you should probably DTR.