This document summarizes research on three personality dimensions - traits, self-monitoring, and sociosexual orientation - and their relationship to mating and relationships. It discusses how high extraversion is associated with higher marital quality but not satisfaction. High neuroticism is linked to marital dissolution and divorce. Self-monitoring is associated with relationship stability and satisfaction. Sociosexual orientation influences the types of partners one prefers and relationship experiences. In conclusion, personality attributes influence the nature of interactions between partners and the quality and stability of their relationship.