How to Marry a Duke by Vicky Dreiling
Spinster, Tessa is a matchmaker for wallflowers, that is, until she meets Tristan, the Duke of Shelbourne who requests her services to find him a bride. Tessa comes up with the novel idea (today it's a reality TV show called The Bachelor) of gathering 24 girls from whom Tristan can select. But! While Tristan is trying to fulfill his legacy by getting an heir he finds himself attracted to his matchmaker - oh, what the scandal!
Meanwhile, we learn more about Tessa and find out she has a secret in her past...
At times (about half-way in) I found it difficult to put the book down, I just really wanted to know how this was going to turn out and what secret Tessa was harboring. The author did a good job telling a good story.