Her Daring Earl by Ellie St. Clair

How does a rake fix his reputation, find husbands for his seven sisters, and turn a former enemy into a lover?
By marrying a demure, respectable young woman of course. Fate, however, has other plans when Lord Fitzroy must hurriedly leave London after multiple attempts on his life.
He certainly never planned on Lady Eliza. In fact, he had deliberately avoided her in the past for she — far from demure or respectable — proved far too tempting.
When she makes him an intriguing offer, he cannot stop himself from giving in. She surprises him in more ways than one, and soon he’s not sure if he should be more scared of her or whoever is trying to take his life.