Mistress Dula felt that this guy needed to learn to do things the way she instructed him. He had to be tamed and she had to do it as cruelly as possible for him to learn his lesson as she felt he had been ignoring her. So she used her whip fetish to torture as well as degrade him. She made him lie down naked and she spanked the hell out of his ass.
Mistress Dula had to uproot the foundation of lies that her boyfriend had started getting accustomed to. He had lied once or twice and she had let it slide but she was not going to do it any longer. She had to make sure that things worked out the way she wanted and hence why she had to whip and spank him while he was naked. He never lied again.
Mistress Dula wanted to spank this guy and she did it so as to send a message to him. He did not do things the way she wanted them to be done and so she used her spanking femdom to do it. In no time, the mistress had managed to pass the message that she wanted and the message was a painful one for the poor guy but he could not help himself.