PhD in Sexology and Psychosexual Counseling. For More Info WhatsApp-9604715783/9359863878. Sex Therapy: Sex Therapy is based on Behavior therapy. It is a type of re-educative therapy. The fundamental of behavior therapy is that all the behaviors are learned, even the maladaptive behaviors. The behavior therapist helps the client to unlearn the Un adaptive behavior and replaces it with newly learned adaptive behavior. The aims of behavior therapy are primarily educational and the techniques facilitate improved self-control.