Golden Girl by Velvet Vaughn

It matters whether you win or lose.

All Peyton Durant had ever wanted to do was swim. She excelled at the sport to become the most decorated female swimmer in Olympic history. But with success and accolades came fame and her share of unwanted attention. When strange packages start arriving, she dismisses the threat until bodies start piling up.
Noah Addison has harbored a secret crush on his former teammate’s younger sister for years. When someone targets her with disturbing gifts and cryptic messages, he puts his feelings aside to keep her safe. But the attraction is mutual and love blossoms. Soon the danger hits too close to home and it’s clear someone resents Peyton’s outstanding accomplishments.

As a killer closes in, Noah will do anything to protect The Golden Girl.