Starlight and the Duke by Meara Platt

All he ever wanted was to love her.

Robert Durham, the Duke of Durham, has loved Lady Fiona Shoreham ever since he was a little boy. But he is six years her junior and had to watch helplessly as eighteen-year-old Fiona married the Earl of Shoreham. She is a widow now and lovelier than ever. He is a man fully grown, considered one of the elite Silver Dukes, known to all as rakehells who will never marry. But Society could not be more wrong about him, for this duke fully intends to claim Fiona as his own.
Lady Fiona Shoreham has never considered remarrying, especially not to a younger man. She has known the impossibly handsome Duke of Durham ever since they were children, but what was once a true and sincere youthful friendship has blossomed into so much more. However, she dares not give in to her heart and admit she loves him, for he is the last in the Durham line and must sire heirs. In almost twenty years of marriage, she and her late husband never had children, a failing everyone has blamed on her. How can she agree to marry the Duke of Durham when she will never be able to give him the one thing he needs?
A compromise is the answer, or so Fiona believes. She is offering this handsome duke one week in her bed. One week only, and then they must move on. But Robert will have none of it. He knows what he needs, and it is Fiona for a lifetime.

What will it take to convince her?

The Silver Dukes is a charming Regency historical romance series where you’ll find heroes with a dash of silver in their hair and heroines who believe they are spinsters and firmly on the shelf.