This boy fucks his stepmom to get revenge on his father

This boy does not accept the divorce of his parents and more because it was his father who abandoned his mother to go with his lover, who is much younger, so he wanted to get embarrassed. Whenever he can, he fucks his stepmother, no matter whether or not his father is at home, to humiliate him for abandoning his poor mother. He gives his stepmother pleasure that his father cannot.