I Was His Mistress for Three Years

The story

Emma Donovan thought Damian Sinclair was her poor, devoted boyfriend until she found him kissing Blaire Reed and learned he was Sinclair Holdings' heir, married to Blaire for two years. Blaire is also the girl who destroyed Emma in high school. Now they demand thirty million and plan a livestreamed wedding to brand Emma a mistress, but her late father's hidden USB holds the truth they buried.