Insecure attachments form neural behavioural pathways that manifest throughout childhood and are replicated in adult loving relationships. In addition, infant trauma and the vandalization of the sexual template during critical periods in the development of the brain may lead to the later development of paraphilias and inappropriate sexual behaviour. Similar maladaptive strategies can lead to co-dependent relationships, domestic violence and sometimes into psychopathology. In a synthesis of neuroscience, developmental, and social psychology this masterclass offers a fresh perspective as to the reasons that may precipitate some individuals into adult attachment pathology and personality disorders which may lead to sexual offending.