I NEED HELP ASAP!!

This is a very long story but let me give you a bit of a background first. Sooo I’m only a freshman and My best-friend(Lets call her L) was dating this guy that liked me way before she liked him (Let’s call him K)I never acted on it tho but we do have a history of being really good friends too. I am also dating her boyfriends best-friend (let’s call him M) everything was going so good for about 3 months we would go on double dates and always hangout then L and K broke up that made it very awkward for us all she would get mad if I would even talk to M around K. While all of this was happening I was having problems with M because he CONSTALLY asked for nudes but I didn’t want to send them and he would always take my phone thru out the school day which I didn’t have a problem with and one day we typically hangout in the gym after school and I just see him staring at my phone with his jaw dropped I run towards him and he got into my eyes only on Snapchat ( only L new the passcode) it was filled with pictures of my nudes ( I NEVER sent them to anyone they were more for self confidence) and I freaked out took my phone and deleted all of them and asked him how he knew the passcode he said Lilly told me I was so pissed so I confronted her and she just said he said you wouldn’t send them to him so I just told him I stopped talking to her and then she got even more mad and told M that I had sex with K while they where dating!? And sent him all those nudes🙄 so he broke up with me and he went to all my other friends and his friends and told everyone I literally had to be pulled out of school because of this and I am still getting messages that I’m a whore who doesn’t know how to keep to herself. I just don’t know what to do I hate homeschool but my mom won’t let me go back