3. Easy a

Olive wants a better reputation so she tells a lie to her best friend, which then spreads round her school like wildfire and soon everyone knows her false story and believes it's true.

At first Olive doesn't mind being known for her promiscuity(even if it's all lies) and plays along with the rumours going around. But it's not long before it all spirals out of control when others take advantage of her new ways and she must shut the rumours and stories down once and for all, even if that means coming clean about the truth.