My girlfriend's reaction when she finds me with my stepmom's big tits

The video features a young college student who is staying with his stepmom while he attends school. One day, he decides to go for a swim in the pool and while he is there, he comes across his stepmother's big tits. He is shocked and confused at first, but then he cannot resist the urge to touch them. His stepmom catches him and is furious, but then she realizes that he is her daughter's boyfriend and she does not want to ruin their relationship. She decides to let it go and instead, she offers to show him how to properly pleasure a woman. The stepmom teaches him how to touch and caress her breasts and then she offers to let him have sex with her. The young man is hesitant at first, because he is still in a relationship with his girlfriend, but he cannot resist her offer. He has sex with her and then he realizes that his girlfriend is the one who is not right for him.