Unrealistic relationship beliefs have been shown to be related to lower levels of relationship satisfaction. Yet, young adults often hold unrealistic or irrational beliefs about intimate relationships. The purpose of this study was to assess the effectiveness of an intimate relationships course in reducing young adults' irrational relationship beliefs. Results indicated a decrease in irrational beliefs, although levels of romanticism remained stable. Gender differences were noted. In addition, participants reported an increase in their knowledge about relationship processes. According to instructor observations and student reports, the two teaching techniques most successful in changing unrealistic relationship beliefs were observing people discuss or enact relationships through guest speakers and video clips, and writing short reaction papers that required exploring one's attitudes and beliefs on a topic.