After Divorce, I Found Out I'm the First Love of Alpha

"She spent fifteen years lifting a movie star to fame. He spent ten years quietly guarding the vow of a wolf. On her husband’s grand wedding to another woman, Scarlett, who had been secretly married to him for ten years, became a laughingstock—all because her husband mistook his mistress for a wealthy heiress.

She decides to deal a fatal blow to those who betrayed and hurt her at the very moment of their greatest triumph. And he is her strongest backing."