Abstract: This study investigated the reasons for increase in adolescence sexual activities in Nigeria. The research design was a descriptive survey type. The population for the study comprised of all parents and counsellors who are married sandwich students in their undergraduate studies of the University of Ado-Ekiti and their lecturers. The sample consist of 127 students and 23 counsellors who are married parents and who had children. The research instrument was a self construct are tagged Sexuality and Parents Questionnaire (SAPQ). The questionnaires were validated using face and content validity procedures. The instrument has a reliability coefficient of 0.80. The instrument was administered by the research and 4 research assistants. The analysis of the general questions was done through the use of frequency counts and percentages while the Hypotheses were tested using chi-square. The analyses revealed that a high percentage at parents and counsellors agree that youths do not adhere to the idea of "no sex guide", that teenage sex has become a way of life and that the role which sex play in the lives of youths and the influence of social forces contribute greatly to the non adherence of "no to sex guide among youths. There was a significant difference in the reason for non adherence of youths to the idea of no sex guide, there was a significant difference in the ways suggested for curbing premarital sexual behaviour by counsellors and parents. The analyses shows that majority of the respondents claimed the provision of sexuality education can curb premarital sex while parental guidance at early age could also assist in curbing premarital sex. Based on these findings it was recommended that sexuality education should be provided on the media, at school so as to assist adolescent to make informed about sexual issues so that they can adhere to "no sex guide" on sexual behaviour until they become more matured to handle sexual issues.