Relationship Psychology What is the 3-3-3 rule in relationship psychology? March 8, 2026 by pups | Leave a Comment The 3-3-3 rule in relationship psychology is a guideline for assessing the health and longevity of a romantic partnership. It suggests that if a couple can successfully navigate three key areas—communication, conflict resolution, and shared values—within three distinct timeframes (three months, three years, and three decades), their relationship has a strong foundation for lasting success. […] Read more »