My Duke of Convenience by Daphne Byrne

“Do not tempt me, wife; I will make you obey me if you continue on this path.”

Lady Octavia vowed never to surrender to any man. But when her beloved cousin vanishes a week before her wedding, she must save her family’s reputation by marrying the coldest duke in the ton!
Duke Simon has sworn to remain unmarried and childless. However, after his brother’s scandalous disappearance, he must protect the duchy’s legacy—so, he makes Octavia his Duchess.
Their marriage comes with one condition: once his brother is found, they will lead separate lives. Yet his wife’s defiance stirs a deep, unexpected desire within him. Now, Simon won’t relent until she submits to him completely…

*If you like a realistic yet steamy depiction of the Regency and Victorian era, then My Duke of Convenience is the novel for you.