Relationships are important to our happiness but, as it turns out, things are not quite as straightforward as this proposition would seem to imply. The first important observation that we can make of this association is that the perception of social support appears to be more significant to happiness than objective indicators of social support. Objective indicators of social support such as number of friends and frequency of social activity show small and sometimes nonsignificant relationships with happiness. One possibility is that the correlation between satisfaction with one’s relationships and satisfaction with life is simply a product of method invariance. The chapter focuses on how different types of relationships affect happiness. But this approach has a tendency to ignore the common relationship dynamics that might impact happiness across relationships. It also focuses on three dynamics of happy relationships: capitalization, gratitude, and forgiveness.