i got outed at school

so at the beginning of the year, i started talking to a guy that literally lives in another state from me. i never were able to fully disguise that i was bi but people would only have second thoughts about it. so while i was talking to this guy, he told me that he was best friends with a girl from my class(IN TE STATE THAT I LIVE IN😭). i was terrified that he would say something to her, so i made him promise not to and i thought that it would be enough. but, yesterday, one of my closest friends told me that the guy actually told her friend and showed her screenshots of our conversation and she was telling her friends (only girls). i don’t know what to do, i just started shaking non stop and the cherry on top was that i had a chemistry test right after that. i already suffer from panic attacks and the girl who told the others literally sits right in front of me. i don’t know what to do, im actually terrified about who else knows it and i don’t have any gay/bi friends who can help me out with the whole “being outed situation”. thank you for reading this, it feels like i got a weight off my chest, at least from now.

ps: the last gay guy from my school had to leave bc people would literally throw rocks at him(im not joking)