Call 911 or get a parent/guardian to do so, whoever is doing gross sh1t like this to minors should be in jail. Also, if you can, dox that person, get their guardians contact info, and inform them so they disown him & also call 911. I hope this information can help you get away from this disgusting groomer
What an absolute creep. Yeah, do what you absolutely can from a legal perspective to get this creep off your back. Dude doesn't need to be allowed anywhere near the internet.