From New York Times bestselling author Sarah Jio comes a romantic, escapist novel following a young woman stuck in a time loop of one-day relationships with romantic partners from her past that asks, ""what if you had a chance to say 'yes' to the one who got away?"".

"An ingenious and heartfelt love story. I absolutely adored this novel!" —Emily Giffin, #1 New York Times bestselling author

Lena Westbrook, a perfectionist and workaholic, has carefully planned and orchestrated every detail of her life. So when her boyfriend of two years breaks up with her on the night she expects him to propose, she's heartbroken and confused. Lena flees to her beloved aunt's home on Seattle's picturesque Bainbridge Island to lick her wounds but when she awakens the next morning, she is shocked to find herself in Paris—in bed with a handsome French man who seems to think that Lena is his wife.

From the elegant neighborhoods of Paris to the charming landscape of Kinsale, Ireland, to the sparkling skyline of New York City, and many other unexpected destinations in between, each time Lena awakens, she finds herself somewhere else with someone else. In each experience, she's given a glimpse of what life might have looked like had she chosen the "road not taken." And as she becomes more clear-sighted about her past decisions, Lena begins to wonder, were any of these former romantic encounters actually...significant?

Enchanting and surprising, Insignificant Others is a lively, heartfelt novel that explores the relatable and resonant "what ifs" of life, but most especially, love.