The Accidental Princess by Michelle Willingham
From dutiful debutante...
Lieutenant Michael Thorpe is a forbidden temptation for Lady Hannah Chesterfield. Etiquette demands Hannah ignore the shivers of desire his wicked gaze provokes, but he's the only man to recognise her restless spirit, and her unawakened body is clamouring for his touch... ...to passionate princess!
They are thrown together by scandal, and a defiant Hannah joins Michael on an adventure to uncover the secret of his birth - is this common soldier really a prince? If so, will the ordinary man who has taught Hannah the meaning of pleasure now make her his royal bride?