The Earl and the Reluctant Lady by Robyn DeHart

He knew he could never have her…
From the very moment Agnes Watkins walked into his life, Fletcher Banks, Earl of Wakefield, has wanted her. Agnes is not just beautiful, she’s clever and determined. Despite her uncommon beauty, she refuses to conform to society’s standards. She’s also the sister of the man who holds Fletcher’s career as a spy in his hands. And that makes her completely off-limits.
She thought she could change him…
Tall, impossibly broad, and handsome as a sin, Fletcher Banks is a brazen scoundrel. Known for his reputation as the greatest lover in London, he’s the only man who’s ever proved a temptation for Agnes. Her duties with the Ladies of Virtue means she can’t overlook his lustful ways. The time has come to reform this rake.
Together their desire is undeniable.
With Agnes setting her virtuous sights on him, Fletcher can’t ignore her any longer. Maybe spending more time with her will release him from his infatuation with her without falling further from her brother’s good graces. But the more time they spend together, the harder it is to deny that this infatuation may be more than lust…