Even though I had never talked to her before, she started telling people I was a slut.

When I was a freshman in high school I started flirting with this cute boy I had just met. There was another girl who had known him a lot longer than me and had a HUGE crush on him. Even though I had never talked to her before, she started telling people I was a slut, and got her friends to do the same, in an effort to make the boy stop talking to me.