Mistress Gabriella wanted to make her boyfriend wear a chastity device as she did not trust him with women away from her. So she had him wear a chastity device and once he had, she tested it on him by teasing him. He got turned on and it hurt him so he tried his best not to get turned on when he had it on. And the only time it was off was when he was with her.
Mistress Gabriela did not like this guy even though he had done nothing to her. She felt that she had to try and get to know him and see if she would like him. But as she spent time with him, she disliked him even more and she used her cigarette and chastity devices to humiliate him. The mistress knew that she never wanted to see him again after that.