Goddess Yasemin wanted to make this loser cry and she did so by forcing him to lie down and facesitting him. He did not see it coming and he was not only shocked, but he was also scared shitless. He did not know how long she would do it and what would happen after. But he knew better than to talk as he did not want to piss her off.
Goddess Yasemin was not ok with how her boyfriend did not satisfy her in bed. She did not want to cheat on him and she did not want to be a masturbator. She had to make sure he took his obligations seriously. That is why she had to facesit him in order to make him realize that he had to go back to satisfying her like he used to do earlier.