Book — Virginia Heath

Diana Merriwell and Giles Sinclair only tolerate one another for the sake of their nearest and dearest. Everyone believes that they are meant to be together, but Diana and Giles know that it is animosity, not attraction, that fuels their barbed exchanges. Anyway, Diana loves her freedom too much to give it up for marriage, and Giles is happily wedded to his bachelor lifestyle.
After Giles' curmudgeonly father, the Duke of Harpenden, unexpectedly turns up his toes, it's only a matter of time before the circumstances of his only son's birth are revealed. With the threat of blackmail hanging over him, Giles must uncover the truth, or he and all those who depend on him will be ruined.