The Gift of a Christmas Scandal by Arietta Richmond

A Duke, promised to marry from childhood, who has no wish to hold to that promise, a Lady who has no desire to do as her father requires, a Christmas House Party, an intense instant attraction, an unconventional solution which leads to love.
Alexander Fortescue, the Duke of Southolton, is trapped – before he reached his majority, whilst he was on the continent, his father signed a contract, binding him to marry Lady Phyllida, who was then a child. Now she is grown, and Alex is Duke – but despite his disinterest in her, the contract seems unbreakable.
Lady Selina Brancourt has yet to meet a man she finds truly appealing – although she has been keen to look. Her father, unhappy that she is yet unwed, pushes her towards a match with an older man, for business reasons. A man she finds utterly distasteful.
When they meet at a houseparty arranged by the Duke’s mother, their common plight draws them together – but soon their attraction leads to stolen kisses, and more. When faced with a future apart, there seems only one solution – the gift of a Christmas scandal.
Can the Duke bring himself to take the dishonourable path, to free himself? Will Selina cast all propriety to the winds, and do what is necessary to wed the only man she has ever wanted?

Or will the demands of duty steal their chance at love?