A six-way partner-swap sparks wild attractions and tearful betrayals. Participants choose whom to love and leave in this heart-pounding experiment.A six-way partner-swap sparks wild attractions and tearful betrayals. Participants choose whom to love and leave in this heart-pounding experiment.A six-way partner-swap sparks wild attractions and tearful betrayals. Participants choose whom to love and leave in this heart-pounding experiment.