The Lady Was Lying by Britt Belle

On the eve of her sister’s debut, Belinda promises her brother she won’t lure a gentleman into a compromising position. Succeeding only because the stranger she encounters in the garden refuses to kiss her, she can’t help but worry that she’s lost her allure.
Already hiding a scandalous secret, James resists the gorgeous woman he meets in the moonlight. Determined to uphold his honor and marry well, he futilely explains that he cannot risk engaging in a casual dalliance.
Unable to forget the sting of rejection, Belinda finds herself seeking James’ attention. As one encounter becomes another, she can’t help but wonder why she can’t get him off her mind. Is it because he said no? Or because he is the one?

The Lady was Lying is the third novel in the Greydon series. It features a lady who has never felt passion and a duke who is fascinated by her. While it can be read as a standalone, Belinda is a prominent character in the first two books and readers may appreciate reading the series in order so they can fully grasp the relationship Belinda has with her family.