For those of you who took Introductory Psychology (way) back in the day, you might remember learning about Maslow’s Hierarchy of Needs. At the top of his needs pyramid, he proposed that people are motivated to strive for self-actualization, where people begin to fulfill their potential and approach ideal, complete selves. Although contemporary research on Maslow’s Theory of Motivation has been limited, many of the same ideas are captured by the self-expansion model, which has received a lot empirical attention over the past 25 years (click here see here for our other articles on self-expansion). Self-expansion motivation refers to individuals’ desires to have new experiences, engage in challenging activities, and learn new things. Within close relationships self-expansion has typically been thought of as those things that couple members do together that are new and exciting (e.g., go on a trip or try a new hobby together). And these new and interesting activities matter for relationships. For example, past research has shown that self-expansion is an important way for couples that have been together for a while to maintain a spark in their relationship.