At Love's Command — Samantha Kane

A Brothers in Arms novel. A child when they were betrothed, Sophia Middleton has been waiting twelve years for Ian Witherspoon to return and marry her. Preyed upon by her vicious father and older brother, Sophie longs for Ian to rescue her. Ian Witherspoon and Derek Knightly became best friends during the Peninsular War, and returned as lovers. Two more years pass before the desire for a wife and children prompts Ian to recall his little fiancée. Ian is determined to make a marriage work between the three of them. Derek opposes the marriage despite Ian's determination, but how long will he be able to resist love's command? Sophie's vulnerability hides a core of strength and the combination enthralls and seduces both men. An apt pupil, Sophie learns trust and passion from Ian, and Derek tutors her in the ecstasy of surrender. Love will conquer their fears as they fight those who would tear them apart.