Dacryphilia, Dacryphilia

Similarly, a dominant may physically torture the submissive to draw tears in a pain scene. In this way, dacryphilia is a form of sadism.

This form of power-play therefore brings pleasure, and for some, sexual arousal. Passive dacryphilia involves a third party who also achieves pleasure in watching someone in emotional distress, usually caused by the scening dominant, though the reason does not restrict the pleasure - a person may enjoy the tears of others despite whatever the cause.

Source: Wikipedia > Dacryphilia