Positive close relationships with immediate close network members are associated with healthy adjustment among emerging adults (EA). These influence the initiation and maintenance of romantic relationships. A cross‐sectional study (N = 630) explored the role of perceived parental and friend support for the current romantic relationship in relationship quality among early EA (EEA; 18–21 years) and middle EA (MEA; 22–25 years) heterosexuals. Structural equation modeling results showed that in EEA, greater friend support was associated with greater commitment, satisfaction, and investments, and less quality of alternatives. Greater parental support was associated with greater commitment, satisfaction, and investments in MEA. This research advances literature by showing different associations between sources of social support and relationship quality in two EA age groups.