The ant farm

Michelle Perry has two men in her life - her spymaster and her lover. She can't let either one find out about the other.
Under the cover of her new job as ranch bookkeeper she is spying on a secret livestock breeding project. Genetically modified livestock.
Ranch life is all new to her but she gets lucky when Matt, one of the ranch managers, takes an interest and teaches her to ride. A few months go by and they are passionately in love.
When the livestock project is finally revealed Michelle sees that she and everyone else on the ranch has been lied to, but all she can think is, "What will Matt do if he finds out I'm a spy, spying on him?"
Read this book now and find out.