I read this book like 3/4 years ago, it's a harlequin romance novel. Heroine's family business is in need of money. Hero blackmails heroine to be his mistress, he first offered her to be his wife and she said no. Heroine was raised by uncle who adored her. Hero has always loved heroine and tried to profess his love when they were younger but heroine's uncle threatened him to not come near her. Hero found out her uncle does not like him because his father has an affair with heroine's aunt which resulted in a child. All the characters in the novel are Greek I think.
Please help thank you :)