The purpose of this research was to examine the direct effects of both the anxious and avoidant attachment styles on romantic relationship satisfaction, and the indirect effects via the attribution styles - loci, stability, and globality of the causes, responsibility of, and blame on the partner - in negative romantic relationship situations. Four hundred and fifty four Chulalongkorn University's undergraduate students completed a battery of questionnaires assessing their attachment styles, attribution styles, and relationship satisfaction. Structural equation modeling reveals that anxious attachment style does not have a direct effect on romantic relationship satisfaction, but the indirect effect of anxious attachment style is mediated by attribution styles. On the other hand, avoidant attachment style has a direct effect on romantic relationship satisfaction without an indirect effect via attribution styles.