Members of 63 lesbian and 72 gay couples reported how frequently their partners engaged in diet‐related social support and control (persuasion and pressure) and how they responded behaviorally and emotionally to such attempts. Although lesbian women received more frequent diet‐related social support than gay men, there were no gender differences in the receipt of diet‐related social control. Results of multilevel models that controlled for body mass index revealed that all participants responded to all types of involvement with guilt and to support and persuasion with appreciation. Responses to pressure differed for lesbian women and gay men and acted as a function of relationship quality. Findings from this study may increase awareness of the importance of same‐sex partners' involvement in eating behaviors.