RecruitingBehavioural interventionCouples Motivational Interviewing to Reduce Drug Use and HIV Risk in Vulnerable Male CouplesThis study utilizes a randomized controlled trial design to evaluate the efficacy of couples motivational interviewing (MI) to reduce the frequency and severity of illicit drug use and frequency of HIV transmission risk behavior (TRB). Participants are randomized to one of two conditions: couples MI or standard couples HIV testing and counseling (CHTC).