Christie Ridgway 
His Forbidden Fiancee [EPUB ebook] 

In the years since his identical twin had stolen the family company, Luke had devoted himself to two things: success and revenge. Suddenly, his brother’s fiance, Lauren Conover, appeared and offered Luke the opportunity to achieve both. A simple case of mistaken identity had made Lauren believe Luke was his twin. But in Luke’s simple plan for payback, he hadn’t counted on wanting to keep Lauren for himself….