Obsessed with someone
However, if he says he’ll do whatever he wants, and continues like that, tell him you will report him to the principal (or to your boss) for sexually harassing you if he says anything else. For example, if he constantly points out that you have big boobs, you can say something like, “When you talk about my boobs, it makes me feel very uncomfortable, and you don't have the right to talk to me like that.” Hopefully, at this point, he will realize you mean business, and promise to stop (don’t worry if he looks or acts annoyed, he is probably just embarrassed). State clearly what he has said/done that has bothered you.Don’t walk up to him and start yelling accusations, as it will make him less likely to listen, and more likely to become defensive. If you think he doesn’t realize his behavior is wrong, you can try starting out with a friendly, but firm tone of voice. Try to approach him when he is by himself, if he is with a group of friends, he is more likely to respond defensively.Therefore, you should approach him, and politely ask him to stop.
He may not realize that what he is saying/doing is inappropriate, and that it truly does bother you. It may be that the boy who is being inappropriate thinks he is giving you a compliment, or that he is just trying to be funny.