So annoying

So in school ( I'm in middle school) there's these two girls who keep saying that I'm dating someone and it gets super annoying ur probrably just gonna say ignore them I tried that and they keep saying why are you ignoring us I thought we were friends. First of all, I don't even know them that well and second of all, they don't even like me. Do you have any advice for me. This was kind of random I just felt like sharing. They also said that they saw me kissing him at the movie theater. I haven't had my first kiss yet and I can't even remember the last time I even went to the movies. Now they told all of there friends and everyone thinks that I'm dating him now. And he thinks that I like him I DKNT EVEN KNOW WHO HE IS!!!!!!