Just one chance?

Y/n has a reputation at her school - total player. She has everyone at their feet for her. One thing that nobody know is that she hasn't been with anyone. That was until her younger sister makes a new friend, Lizzie. However Lizzie is very aware of y/ns player status and is very guarded with her heart due to the past. Will liz give in to y/n's charm? Can y/n win her over? Or will y/n's sister put a stop to it all?
Gxg
Young Lizzie
Mature*