Why are personality disorders controversial in modern clinical practice?

The answer is Science – Practitioner Gap. This is because there is a division between psychologists who believe that it should be primary science versus those who believe that clinical practice should be primary be an art. The Gap into science practitioner sometimes can make chaos to its modern clinical practice.

intimacy, passion and commitment are the components of a interpersonal relationship emphasized in the triangular theory of love by robert sternberg.

the triangular theory of love says love can be comprehend as this componest form the vertices of a triangle.  

intimacy relates to feelings such as of closeness and connection;

passion relates the drives that brings people together, as physical attraction.

commitment relates to the being in a long-term relationship.