Saved By The Golden Boy by Anne T. Thyssen

Emma just wanted to protect her sister after she had her heart broken and her first time taken from her. She goes back to the very place she is not even allowed to set foot in … school. Emma avenges her sister by punching one of the most popular boys from her sister’s high school and the biggest player, but she did not know whose eye she would catch.
Brendon is the golden boy and the perfect athlete. He has always performed well in anything he has set his mind to. After getting out of a three-year-old relationship, Brendon really just wants to enjoy the rest of his time in high school, but a certain troublemaker suddenly makes it hard for him to focus on anything but her.

Will Brendon be able to get close to the closed-off sister, Emma? Can he show her not everyone views her just as a problem? And will Emma ever open her heart to Brendon?