The purpose of this study was to examine the mediating effects of emotional expressiveness questionnaire, and self concealment on gender role conflict and romantic relationship satisfaction in Korean male college students. To that end, 299 male college students in their early 20s in Seoul and Gyeonggi Province were surveyed for about a month and used a total of 293 responses, excluding those for whom they had no dating experience and inappropriate ones. Studies show that: First, gender role conflict, emotion expressiveness questionnaire, and self-concealment were strong positive correlations, and gender role conflicts, self-concealment, and emotional expressiveness questionnaire were strong negative correlations. Second, the emotional expressiveness questionnaire was partially mediated in the relationship between gender role conflict and romantic relationship satisfaction, but self-concealment showed no mediating effect. Third, in the relationship between gender role conflict and romantic relationship satisfaction, self-concealment and emotional expressiveness questionnaire were found to be double-mediated, the indirect route from gender role conflict to romantic relationship satisfaction through self-concealment is not significant. The findings of this study can reduce the emotional expressiveness questionnaire and self-concealment to increase the romantic relationship satisfaction among adult men who are experiencing gender role conflict. Based on these findings, we point out the limitations of this study and suggest future research.