The Affair by Santa Monetfiore

Second Hand 

Would you risk everything for love? Bestselling children's book writer Angelica is amused and flattered at the attention of Jack, the owner of a vineyard in South Africa, whom she meets at a dinner party. With his easy charm and reputation as a ladies' man, Jack makes her feel good about herself -- surely it can't do any harm to indulge in a mild email flirtation? After all, she wouldn't risk her stable marriage and the happiness of her children. But things don't stop there, and when Angelica is sent to Cape Town for a book tour, the affair begins in earnest.