This study examined the relationship between emotional dating abuse perpetration and attachment anxiety and avoidance using multimethod, multi-informant dyadic data. Data were derived from a sample of young adult heterosexual dating couples (N = 113 couples). We measured attachment through self-report survey data and emotional dating abuse through self-report surveys, partner-report surveys, and ratings by independent observers of a videotaped couple interaction. Both female and male anxiety were related to female emotional abuse across each method. Male anxiety was related to male emotional abuse in survey data, but female anxiety was related to male emotional abuse in observed data. Neither male nor female avoidance was related to emotional abuse. Dating abuse prevention should focus on attachment anxiety factors (e.g., jealousy, anger) to reduce emotional abuse in young adult romantic relationships.