This study examined nonviolent (NV), unilaterally violent (UV), and mutually violent (MV) patterns of perpetrated intimate partner violence in relation to dyadic relationship quality and partner injury. The respondents were 1,294 young adult, Add Health partners (AHP) and their non-Add Health partners (NAHP), in dating, engaged, or in marital relationships, who were participants in Wave III of the National Longitudinal Study of Adolescent Health (Add Health). Using both partner reports of perpetration to classify intimate partner violence (IPV) patterns resulted in 25% of couples with a MV pattern, and 75% of couples with a UV pattern; among those couples (41%) reporting any perpetrated IPV. Results also showed poorer relationship quality and higher partner sensation-seeking scores among MV and UV couples when contrasted with NV couples. Those couples with MV patterns were more likely to contain partner injury than those with UV patterns.