Couples counseling has a long history in many countries. Recent years have seen renewed interest in how MI can be used with couples to support individual behavior change. Relationship partners (e.g., married spouses, cohabiting couples, main or primary relationship partners, dating partners) have substantial potential to influence one another’s behavior. Partners in such relationships often rely on one another in important ways. They may share important resources (like money, housing costs, social networks, or time). They can also influence one another through their social interactions.

