Lifetime experience of selling sex among adolescents was investigated together with sociodemographic correlates, parentchild relationship, and the existence of people to confide in. Changes over time regarding the selling of sex were investigated through a comparison of data from 2004 and 2009. This study was carried out using 3,498 adolescents from a representative sample of Swedish high school students with a mean age 18.3 years. Of these adolescents, 1.5% stated that they had given sexual services for reimbursement and both male and female buyers existed. The adolescents who had sold sex had a poorer parentchild relationship during childhood and had fewer people to confide in about problems and worries. Changes over time were found especially regarding the Internet as a contact source and also immigrant background.