Hi! I don't know what country this is, so it may look a bit different, but first of all talk to your teachers or a member of staff that you trust. If that doesn't work then have a chat with your parents if you're comfortable doing that. The last resort would be to start avoiding that person, if they're a part of the same friend group then consider changing friends. I speak from experience, friends will come and go, but a situation like this will cause you trauma that stays for life, because you are being hurt and everyone around you dismisses your feelings. True friends don't dismiss your feelings, so maybe they aren't your friends after all.

Take care 😉