This study examined consequences of binge drinking on relationship conversation qualities (positive tone, general disagreements, drinking disagreements, and talks about drinking) among romantically involved college students. Conversation qualities were predicted with three binging variables: (a) same day binging, (b) prior day binging, and (c) total amount of binging reported. The participants (N=156) completed 10 daily diaries of relationship conversations as well as drinking behaviors. Same day binging increased the occurrence of both drinking disagreements and talks about drinking. However, prior day binging was not associated with any of the four conversation qualities examined. Greater numbers of binges over the duration of the study were associated with less overall positive tone, and more general disagreements, drinking disagreements, and talks about drinking. The implications of the findings for student drinking patterns and relational quality are discussed.