helpppppp

Hey gals I need some advice, I'm a 16 year old girl from Australia and I went to a party on the weekend. One thing led to another and I ended up having sex with this guy who I've been talking to for a while. He was really sweet and kind to me and treated me amazing! I cam back to school on Monday and had a few hickeys that were really bad on my neck so I coverd them with makeup. But people still noticed. So then arose the question of who it was. I have reluctantly told a few people who it was but people keep finding out. I have received rude messages from the boys in the year above me calling me a dirty slut ect. He was only the second guy who I've had sex with and I'm feeling really sad about what people are thinking. Because it was really good with this guy.