An apparatus for managing inter-personal activities to facilitate matchmaking between single individuals, by instructing each individual what to do and with whom during a series of game sessions. Singles join a forum in which a plurality of activities contained in a database are individually assigned to participants, who confidentially express their preferences for specific activities and for other participants with whom to conduct activities. Expressed preferences are not disclosed to other individuals, but are input to a secure computer system that assigns the activities. Participants' wish-lists influence assignments made by the computer, and random factors provide variety and protect privacy by obscuring the effect of the wish-lists. After each assignment, participants can update their wish-list to affect further assignments.