To Marry an English Lord by Robin Lee Hatcher

Sometimes love is a risk worth taking.

Sebastian Whitcombe, Viscount Willowthorpe, comes to America to experience the great Wild West for himself before it disappears for good. The adventure comes with a convenient bonus—it postpones his father’s edict that he take a wife from the British aristocracy. Sebastian isn’t so much against marriage as he is an arranged marriage to the wrong woman.
Jocelyn Overstreet hasn’t returned to her family’s eastern Idaho cattle ranch in six years. She’s far too busy managing the New York City offices of Overstreet Shipping. But when her older brother has a serious run-in with a bison, she returns to the ranch only to find the Overstreet home invaded by visitors from England, one of them a disturbingly handsome viscount who disarms her defenses at every turn.
Sebastian’s future lies in England where the Earl of Hooke is determined to choose his son a wife. New York City holds Jocelyn’s future with scant time for romance, much less marriage. The attraction between her and Sebastian seems doomed to fail.

Amidst the clash of their worlds, Sebastian and Jocelyn find that the risk of love, against all odds, might just be a risk worth taking.