The psychological well-being of emerging-adult college students may relate to their success in romantic relationships. One hundred forty-five emerging-adult undergraduate students (117 women, 28 men) completed an online questionnaire about their attachment style, dating anxiety, fear of being single, selfefficacy, subjective happiness, self-esteem, and psychological distress. Low attachment anxiety and social distress in group dating situations and high levels of self-efficacy in romantic relationships predicted happiness. Low attachment anxiety and high self-efficacy predicted low psychological distress. Less fear of negative evaluation from a dating partner and high self-efficacy in romantic relationships predicted self-esteem. Given the findings of self-efficacy in romantic relationships on well-being, relationship education is recommended.