Fortune's Secret Marriage — Jo McNally

Married…

To her number-one enemy?

After the shocking discovery of her family's true identity, a sheep show in Las Vegas ought to be mundane for Dahlia Fortune. That is, until the Texas rancher takes a spontaneous walk down the aisle with her new next door neighbor and childhood rival, Rawlston Ames! A quick annulment's clearly the way to keep this whirlwind marriage from becoming front-page news back home. But why can't Rawlston cut ties with a woman who's always been alternately infuriating -- and infatuating?

From Harlequin Fortunes of Texas:

Book 1: Fortune's Secret Marriage by Jo McNally
Book 2: Nine Months to a Fortune by Elizabeth Bevarly
Book 3: Fortune's Faux Engagement by Carrie Nichols
Book 4: A Fortune Thanksgiving by Michelle Lindo-Rice
Book 5: Fortune's Holiday Surprise by Jennifer Wilck
Book 6: Fortune's Mystery Woman by Allison Leigh