Angela Marino has the beautiful life she always wanted. A loving husband. Two young daughters. A successful career. So why can't she stop thinking about Nicholas Pappos?

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Fifteen years ago, Nicholas and Angela had a whirlwind love. One that was passionate, consuming, and impossible to forget—until he broke her heart. They quickly moved on, married their rebound partners, and built lives of their own. But staying in the same friend group forced them to bury unresolved feelings and maintain a front-row seat to each other's lives ever since.

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Now, years later, their carefully maintained performances start to crack when a destination wedding brings everyone together on a tropical island.

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Four days in paradise is all it takes. As old memories resurface and a familiar, mutual attraction becomes impossible to ignore, Angela realizes the past can't stay buried forever even if it threatens everything she’s built in the present.

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Because sometimes the hardest thing about moving on isn't letting go.

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It's wondering what might have happened if you hadn't.

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Perfect for fans of Emily Giffin, Elin Hilderbrand, and Taylor Jenkins Reid, this thought-provoking story explores love, marriage, friendship, and the complicated question of whether a picture-perfect life is enough when part of your heart is still wondering what might have been.