Acidulous

Lucianna built her life on love, sacrifice, and the belief that loyalty was unbreakable. When her parents died, she became everything for her younger sister-protector, provider, and the one person who would never let her feel alone. She gave up everything to give her sister a life untouched by loss. She believed that kind of sacrifice meant something. That it created loyalty. That it made betrayal impossible.
She was wrong. The day she caught her sister in the arms of the man she was about to marry, everything fell apart. In a single moment, the life she had built shattered-and with it, every truth she thought she knew. The love she trusted. The future she believed in. All of it gone. Or so she thought. What Lucianna believed was deception was only the beginning. The truth behind it is far more calculated-far more dangerous-than she was ever meant to uncover.
And once she does, there will be no way to escape what comes next.