The relapse prevention paradigm in treatment of sex offenders is to a great extent based on Anglo-American attitudes based on moralistic aspects, and thereby bringing moralistic aspects into the therapy room and the theoretical understanding. Further has a focus on relapse prevention in treatment of sex offenders, taken away attention from developmental aspects and antecedent conditions in the development of sexually offensive behaviour. The focus on child sexuality, especially in Norway in 70th and 80th, illuminated important processes in developing healthy sexuality, and combining these findings with Bill Seablooms special approach to treatment of sex offenders in Minneapolis, we created a synergetic cooperation with a developmental and relational focus on group therapy with people who had committed sexual offences.