Clients who express interest and are eligible will undergo the consent process. At enrollment, several steps will be taken to increase the confidentiality of participants related to text message communication. For example, HIV testers will instruct participants how to maintain privacy on their device, and delete SMS messages from their mobile device. At recruitment, HIV testers will ask the participant to save the number from which the messages will be sentas 'MOTIVES' so that the respondent easily recognizes the sender without increasing the chance of accidental disclosure of study participation. Further, participants will be reminded that they will receive texts on the same day every week (e.g., Wednesday and Friday) and at the same times of the week (e.g., 2 pm PST) to help them anticipate the arrival of study-related communication. The text message database will be secured by password protection, anonymized data, and managed onsite. The participant will then participate the baseline survey (details of the survey described later). The participant will then be randomized into either intervention or control group. The randomization of TGW will be performed separately from MSM to ensure equal distribution of TGW in both arms (approximately 90 MSM and 10 TGW in each arm). This is important because our pilot data suggests TGW experience much higher levels of risk and vulnerability to HIV compared to MSM and will represent a smaller percentage of the overall study population.