Certainty About Your Feelings for Your Partner Boosts Relationship Happiness and Well‑Being

A 488‑person study (US/UK) found that higher positive attitudes toward a partner predict greater relationship happiness, and certainty in those attitudes amplifies this effect and links to better mental health through increased satisfaction. The strongest effects appeared in long‑term relationships (12+ years). Four‑month follow‑up with 319 participants suggests an indirect path (certainty → satisfaction → well‑being) rather than a direct cause; limitations include a self‑selected sample and short follow‑up period.