He's sleeping with his son's mistress
In moments of loneliness, I believe women always yearn for a man who makes them feel alive. And this teacher is a lonely woman. Her husband has been gone for a long time, and her profession occupies her all day. It's obvious she wants to share her life with a man who makes her happy, and although a high school teacher isn't the best option, you often can't say no to love and pleasure. He's the father of one of her students at school, and when the opportunity arises to lick his balls, she can't refuse. She's a mature woman with a lot of experience in the realm of sex, and she wants to show everything she can do with her mouth, her hands, and her breasts.