A pilot investigation was undertaken to determine whether the social relationships between men who currently used heroin with their female mates differed from those of men who formerly used heroin, but were currently abstinent, with their female mates. Six couples were selected for study via the representative case method. Men currently abstinent from heroin had begun drug use later, had a family history of affective disorders, and had initiated their conjugal relationship after cessation of heroin use. Female mates of males currently abstinent from heroin had never used heroin with their mates in conjunction with sexual activity, had significantly positive ratings of their mates' performance of social roles, and were striving to obtain formal training to improve their employment skills. In contrast, the couples including actively using heroin addicts used opiates together, especially to enhance their sexual activity. The relationships of these couples were not as mutually supportive, and the male's role was less responsible and attracted less respect than that of the abstinent male. The females were depressed and had little positive aspects to their lives. Partners in all couples experienced a large number of stressful events, but current heroin use increased stress and hampered coping efforts. Interaction analysis of dynamics in relationships of men currently abstinent from heroin revealed that participation in mates' family life served to reshape their behaviors into more socially acceptable roles.