Okay, this is a difficult situation. What exactly is he asking you to “change” because while you should never, ever change for anyone. However, there’s nothing wrong with improving yourself. If he’s asking you to change, for example if he want you to change how you dress, or tell you to work a certain job, then get away from him. If he’s asking you to for example, try and be cleaner, or not curse as much, I don’t see an issue