A Dance in Heather — Julie Beard

Lady Tess Farnsworth bitterly accepted the royal decree to wed the man whom she detested above all. The gloriously handsome Earl of Easterby had failed her in a desperate time of need, and her only solace in wedding him was the promise of vengeance. First, Tess plotted to seduce the Earl. Too late, she realized that the man she sought to seduce was himself a master of seduction...

Hero: Lord Richard Avery, Earl of Easterby
Heroine: Lady Tess Farnsworth