Before She Knew - Falling Leaves Series, Book 1, #1

Sometimes the one that got away is the only one worth fighting for. First loves find new flames in this small town second-chance romance.  When Rachel met Brad, she thought their love would last forever. The world had other plans. Now, she's a stay-at-home mother and painter, living a life some would kill for. But the neighbors don't know about the issues in her marriage. Her husband's secrets have created a chasm between them so wide that she can't see the other side.
But loyalty is a choice-Rachel is determined to make it work.  She never imagined that a commissioned art piece would change her life.  * Brad pushed his first love away by choosing another woman, but he never really got over Rachel. And he can't deny the awakening of old feelings when he runs into Rachel in their hometown. Just being around her makes him happier than he has been in years. Is she what's been missing from his life? But with Rachel reeling from new revelations and old pain, clutching harder than ever at what's left of her marriage, Brad is left floundering.
He's certain there's only one thing worth fighting for: each other.  After all, leaving Rachel was the biggest mistake he ever made. And it's one he doesn't intend to repeat.  Small-town secrets, high school sweethearts, and whole-hearted adoration that spans a lifetime. Fans of Tessa Bailey, Lucy Score, and Elin Hilderbrand will love this emotional contemporary romance debut from Katie Bingham-Smith.