This study examined the role of growth and security expectations in shaping people's judgments of relational boredom and conflict (for discriminant validity). In Studies 1 and 2, the type of expectation gaps (growth vs. security) in hypothetical relationships (as well as the occurrence of a gap in Study 2) was manipulated, and people's judgments of relational boredom and conflict were assessed; Study 3 assessed these associations in people's own relationships. Across all studies, people were more likely to diagnose boredom in other people's relationships (Studies 1 and 2) and their own relationship (Study 3) if the expectation gap for growth (vs. security) was greater. People reported more conflict in their own relationship if the expectation gap for security (vs. growth) was greater.