Problem: A 21-year-old college woman is involved in her first serious dating relationship. Like many young women, she wants to look and feel her best. While flipping through a clothing catalogue, she notices the attractiveness of several female models. She wonders anxiously if it means she is gay. She repeatedly asks her boyfriend for reassurance, sometimes to his annoyance. The young woman avoids being alone with most other women for fear of somehow losing self-control and sexually acting out. She prays to God continually for forgiveness. When an obsessive idea is triggered, she tells herself three times that she loves her boyfriend, and mentally rehearses all the ways he makes her feel good.