When You Loved Me by Beatriz Williams
Summary (from the publisher): A young widow returns to her late father’s New England estate, only to be drawn into the hunt for the rumored pirate treasure that consumed his life, in this thrilling and moving novel from the New York Times bestselling author of Husbands & Lovers . Local history insists that a legendary pirate buried his treasure somewhere beneath Windward, the decayed Cooper estate on Winthrop Island, but Lucy Cooper never trusted the fable that broke her family apart. When a widowed Lucy returns with her young daughter to grieve her estranged father, she discovers the property’s buried under a mountain of debt, and Ben Ressler has just turned up on her doorstep. Thirteen summers ago, a teenaged Lucy never meant to fall in love with Ben, a Dartmouth football star vacationing next door at the Peabody estate, and the object of an all-consuming crush by Laura Peabody, Lucy’s best friend. Those two weeks with Ben were the best and worst of Lucy’s life, d...