The prevalence of Autism Spectrum Disorder (ASD) increased from one case out of 2,500 children in 1989 to one out of 91 children in 2009, according to researches. In face of this alarming situation, ASD was considered a matter of worldwide public health by the United Nations. Although it is not a disease, nor is it contagious, the idea that we are going through an "autism epidemic" is widely spread. Considering this context, authors alert to the necessity of paying attention to the dissemination of an exaggerated portray of people with autism, as if they were "non-communicative and non-interactive", pointing out that there is substantial evidence showing they engage and respond to social interaction. The stereotype of young people with autism being asexual still persists, alongside the idea that this could be a problematic subject for these individuals. Inside the family environment, parents and other relatives hope that the sexuality of their children with autism will be domesticated, or even that it won't show at all, which perpetuates stereotyped views that strengthen prejudices regarding this subject. As far as we could investigate, there are no researches in Brazil that directly inquire young people with ASD diagnosis in regards to the quality of their affective relationships and sexuality, which are fields that represent a fundamental part in the experience of being a teenager and transitioning into adulthood. This study aimed to investigate the experiences of sexuality in adolescents diagnosed with ASD, from their own perspective and that of their fathers and mothers, examining their possible demands, facilities and challenges. To do so, a qualitative exploratory cross sectional study has been drawn, aiming to understand the meanings given to the experience and representation of teenagers with ASD and their parents regarding sexuality, by looking into biopsychosocial aspects, mainly the psychological and relational dimension of these experiences. Three teenagers with ASD took part in this study, along with their parents, representing a total of nine participants, which were reached through an institution that supports people with ASD in a city in the state of São Paulo. Semi-structured interviews were carried out to collect the data from the teenagers and their parents, in addition to the use of mediator materials in the collective interviews. Those interviews were recorded with the consent of the participants. The data was organized with the production of transferential narratives. With the support of this psychoanalytical research resource, the investigation focused on the way that sexuality developed in each child with ASD, inside each family unit, according to the perspectives of the teenager-mother-father triad members. The interpretation of the results was based on the psychoanalytical studies about autism. Two fields of affective-emotional meaning were articulated, namely "Fear of sexuality" and "The disappearing of the autistic subject", which focused on the theme of fear as the predominant feeling...