This study examined the extent to which antisocial behavior and depressive symptoms were associated between romantic partners and whether the partner’s antisocial behavior and depressive symptoms would affect the individual’s aggression toward the partner above and beyond the contribution of his or her own symptoms. These questions were examined concurrently and in predicting change over time in aggression toward a partner for 79 couples from a young, at-risk sample. Findings from concurrent models indicated that there were reliable associations of antisocial behavior and depressive symptoms between partners and that the women’s antisocial behavior and depressive symptoms were significantly related to concurrent levels of the young men’s physical and psychological aggression. Women’s depressive symptoms remained significant in predicting the men’s psychological aggression over time. Overall, men’s risk factors had little effect on their partners’ aggression. The findings suggest that intervention efforts to reduce partner violence need to take into account the potential influence of the partner’s characteristics, as well as the perpetrator’s, and should involve both partners.