This study aimed to understand the nature of the relationships between three forms of past victimizations (exposure to interparental violence in childhood, sexual harassment by peers since beginning high school, prior experience of dating violence), physical dating violence perpetration by adolescents, and anger-hostility and emotional distress. The sample was composed of 1,259 high school students aged between 14 and 19 years who answered self-report questionnaires. Mediation analyses were conducted according to Baron and Kenny's approach. Logistic and linear regression analyses reveal that being victim of sexual harassment by peers and of dating violence are associated to physical dating violence perpetration via a partial mediating effect of hostility in girls. Contrary to results with girls, there is a complete mediating effect of emotional distress for boys. Results suggest that dating violence prevention and intervention strategies could be adapted according to gender and that sexual harassment should be addressed. (Contains 3 tables, 2 figures and 2 notes.)