When this mistress noticed that her landlord had sexual interest in her, she was not particularly pleased as she did not feel the same way. But she had long wanted to try tease and denial so she used him for it. She used her big ass to tease him. He was super turned on but she just teased and denied him. He did not get the cookie he had been hoping to get.
Mistress Nikola knows how much her ex loves sex and she knew all his buttons. Since she was still angry at him and he was still trying to get her back and to have sex with her too, she knew she had the perfect chance to tease and deny him for her own fun. And she did not waste any time doing so. She teased him and made him hornier than he had ever been then she denied him.