Lady Shay felt betrayed by her boyfriend to the extent that she had to dominate and humiliate him badly. She did it with her forced bi femdom and she made sure that he knew how pissed she was at it. She was not going to cheat back but she was going to make sure that he was dominated and tortured cruelly so that it would never cross his mind to do it again.
Lady Scarlet wanted to demonstrate the things she wanted this guy to do. She jerked him off with her hands but she was wearing gloves. But she wanted the guy to use his bare hands to jerk off another guy and she wanted to watch when it happened. And both guys were straight so she had forced them to do something none of them had ever imagined he or she would do.
These guys had borrowed money from this mistress but they had refused to give it back to her. They always had excuses whenever she asked them for them money and she got so pissed at them that she tricked them into meeting her and when they did, she forced them to be bi. And she got them to kiss each other and to suck each other before she made them have anal sex.
These guys thought that they were smart enough to con lady Shay and to get away with it but it did not happen the way they wanted. The mistress cornered them and she punished them in a way they had never imagined was possible. She forced them to be bisexual by having them suck each other's dicks and when they were done, she had them lick each others butts and assholes.