The purpose of present study was to determine the effectiveness of Rational- Emotional- Behavior therapy (REBT) on irrational attitudes about Spouse Selection in girls and boys. Therefore, 32 girls and boys in city of Bandar Abbas were randomly selected and assigned to two experimental and control groups with 16 girls and boys in each group. The experimental group received 8 sessions in each week. Attitudes about Mate Selection Scale (ARMSS) were used as the pretest and post-test. Results of analysis of covariate showed that the mean scores of irrational attitudes about romance and mate selection in the experimental group was significantly lower than the control group in the post test (p= 0/001). Also, mean scores of subscales of irrational attitudes about romance and mate selection (believe love, pivotal experience, idealization, opposite seeking, easy getting and optimistic view) in experimental group was significantly lower than control group in the post test