Remember Me? by Sophie Kinsella

A young woman wakes up in a hospital with amnesia, only to discover that her life has drastically changed in the past three years. Once a struggling twenty-something with a dead-end job and a less-than-perfect boyfriend, she now finds herself married to a handsome millionaire, living in a luxurious apartment, and working as a high-powered executive. As she navigates this unfamiliar world, she begins to uncover the truth about her past and the choices that led her to this point, ultimately questioning what truly makes her happy.

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