I liked this guy and then people made it into a thing like his mates said i was ugly then my friends made it worse yelling at them and evryone now thinks it was my mate that made up the lies but i don't know!!
I have been the subject of rumors many times, the key is, detach yourself from the rumor, tell the gossipers that they can believe whatever they want to believe. Works like a charm, no one makes rumors about someone who is carefree
You can't really stop rumors, but you can create a new one that will cover the last one. Think what you want to spread around and do it. Or you can just wait for time to pass and everyone to forget this. You just have to be silent about the topic and refuse to talk about it at all.