This is my first Eloisa James novel, and I thoroughly enjoyed it. 
 Merry Pelford has already jilted two of her fiances and she's determined to keep her promises after her third betrothal to Lord Cedric. That is until she met a stranger on a balcony and proceeds to turn London's polite society on its head. 
 Merry is an American heiress who have yet to learn all the ways regarding English manners. The man she met on the balcony couldn't care less about English manners and found Merry desirable as she is. Unbeknownst to the Duke of Trent, the woman he met is already betrothed and he's fighting hard against his desires. 
 I really liked the dance between Trent and Merry as they fought their feelings in the first half of the book, and enjoyed their relationship in the second half. Merry's character is quite likeable, she's smart, stubborn, strong-will, and kind. I liked Trent as well, even though he has a rule to not show excessive emotions such as love. I felt sad and sorry for the boy that he was. But the man he made of himself was admirable. Love his declarations for Merry at the end. 
 I'm adding more of EJ's books to my list after this.