You have a girlfriend, but she hasn't been fucking you at all lately. You're so bored you agree to help your long-time friend start working out. You just won't mention it to your jealous girlfriend. After the first workout, your friend calls you out on clearly being horny and in need of an orgasm. She wants to help you, but also understands you don't want to cheat on your girlfriend. Then she has a brilliant idea! JOI isn't cheating!