I am someone else’s mistress. I want to break up with him. How to say. Thoroughly

You are a girl, and you are still someone else’s mistress. Now you may realize that being a mistress is a bad behavior, and it is not what a normal woman does, so now you realize If you want to break up with him, how do you say it completely? I think your current idea is very correct, but as a girl, she should find her own destination and not be a mistress, because you know that no one is happy when she is a mistress. In the end, she will either be beaten black and blue, or she will be beaten. The man is bruised and bruised, so it’s really not too late for you to look back now. You can go straight to that point and tell him that you completely don’t want to be a mistress anymore. The question is, you may say that here you are afraid that you have spent too much money? If you spend too much of the other party's money and the other party won't let go, it will be very troublesome. So what is the specific situation? You should think of a way to solve it concretely. You should really end this relationship completely, because for a woman, the sooner the better, and the harm will be very small