The Rogue’s Offer by Monica Burns

A Reckless Proposal. A Counter Offer. The stakes are higher than either imagined.
Her Reckless Proposal — Ophelia Templeton’s dead husband, Viscount Havenstock, convinced her she was a cold, unfeeling woman incapable of passion. When her drunkard of a father loses her home to the Earl of Thornbury in a wager, Ophelia presents the man with a rash proposal. The return of her home in exchange for the challenge of teaching her to feel passion. Unfortunately, she’s propositioned the wrong man.
His Counter Offer — Mathias Gilchrist has always protected the interests of his brother, the Earl of Thornbury. When Ophelia mistakes him for his brother, he thinks she’s one more in a long line of women eager to be a countess. Despite his initial impression, Mathias is intrigued by Ophelia, and he makes her a counter offer in the game of seduction and passion.
Now the stakes are higher than either imagined. — When pleasure becomes a dangerous game of hearts, it will take meddling by the Reckless Rockwoods to ensure their friends have their HEA.