Saving Easton: A Brother’s Best Friend Romance (Oakside Military Heroes Book 2) by Kaci Rose

He's a grumpy prisoner of war who won't let anyone around him. She's the ball of sunshine that pushes his boundaries. What happens when she pushes too far? A year of being tortured as a POW has left him lost in his own head. Until she walks in... his best friend's little sister. She's full of sunshine and smiles, while he can't stand to be touched but he still feels drawn to her. He had a crush on her for years and her memory pulled him through his darkest times. Even now she's the only one who holds the key to his recovery. She's pushing him outside his comfort zone, but when she pushes him too far, will she lose him forever?