Ask For It - Sylvia Day
As an agent to the Crown, Marcus Ashford has fought numerous sword fights and dodged bullets and cannon fire. Yet nothing arouses him more than his hunger for his former fiancee, Elizabeth. Years ago, she abandoned him for the boyishly charming Lord Hawthorne.
But now Marcus has been ordered to defend Elizabeth from her husband's killers and he has sworn to do so, while tending to her other, more carnal needs. He will be at her service, in every sense.