Rules of Engagement by Tracy Cooper-Posey

They loved each other before she died. Now she can’t remember why.
Lady Eleanore Neville, sister to the Duke of Gainford, was thought to have been lost at sea. Miraculously, she was rescued, only now her life is empty of meaning. She reaches for steadily more risqué entertainment and company in an effort to find it.
Cian, Earl of Innesford and the head of the Williams family, whom the Nevilles openly despise, has loved Eleanore for years. He hovers on the edge of Eleanore’s life, helping the Duke curtail the worst of Eleanore’s excesses, despite knowing there is no hope of his beloved Ellie ever truly being his.
The delicate balance begins to unravel when Cian discovers a nude portrait of Eleanore in a public gallery and is forced to act…