The Unsuitable Duke (Landing a Lord #4)

An enemies to lovers romance.

Ellen Laughton and the Duke of Castlefield were the best of friends as children. When he discovered his parents were hoping they'd marry one day, he pushed her away.

She's been angry with him ever since.

By the time Castlefield realized there was only one woman for him, Ellen was already betrothed to another. Now that she's a widow and out of mourning, he is determined to win back her friendship and her heart.