The difficulty the nation has had in reducing adolescent pregnancy rates may be due, in part, to the fact that intervention efforts have assumed those pregnancies were the result solely of peer – to-peer relationships. In fact, many ‘teen’ births are fathered by adult men. In addition, teen females have a high rate of sexually transmitted infections compared with their male peers, suggesting that adult male – teen female relationships may also be implicated in disease transmission. This lesson examines the issue of relationships in which adult males are having sexual intercourse with teen females. It encourages students to evaluate those relationships and give advice about them.