All There Is by Violet Duke

Emma Stevens made a fresh start in the small town of Juniper Hills, but she still lives with the guilt of an impossible choice from her past: saving her sister—but leaving her stepbrother behind—in a fire that destroyed their home. The boy next door may have dragged them to safety, but he also caused the fire that devastated her family. She swore she’d never forgive him, so she’s stunned when he shows up on her doorstep.
Jake Rowan has never been able to escape the worst day of his life, when he took the fall for his older brother, who started a tragic fire. Years later, he’s carved out a life as a carpenter, but when he runs into Emma again, he’s reminded of everything he’s lost—and everything he still longs for.
Jake has never forgotten Emma, the dream girl whose life he destroyed. And she’s never stopped thinking about her first crush. As they grow closer—and old secrets are unearthed—will they be able to help each other heal, or will their hearts remain broken and burdened by the past?