The Lord of Heartbreak (Reluctant Regency Brides #2)
Claudia Stone

James Fairweather, Lord Payne is the heir to the Ducal seat of Hawkfield. Tall, handsome and with a roguish charm that has women falling at his feet, he should be living the easy life of an entitled bachelor. The only problem is that his father has tired of his rakish ways and declares that unless Payne cleans up his act he will be disinherited.
What Payne needs is a respectable —dare he say boring— woman that he can parade around for a season to convince his father that he has changed his ways. The only person who fits the bill is his friend’s sister Jane, who reluctantly agrees to go along with the charade —for a price, of course. Though when the Lord of Heartbreak finds himself falling in love with the clever, bookish young woman, he realises that he’s very much so at risk of having his own heart broken.
This sweet, Regency comes with a guaranteed Happily Ever After and can be read as part of the series or as a stand-alone novel.