His Brother's Bride (Banks Brothers Brides)

His Brother's Bride is the fourth and final book in best selling historical romance author, Rose Gordan's third series. It falls into two parts. The second part, which this book is part of is a sequal to the other two series following the twin brothers of Alex and Edwina Banks.
==Book Description==
While traveling around America, Elijah Banks makes a promise he's unable to keep. So to guard his family's name and his sister-in-law's feelings, Henry Banks tells this beautiful stranger that he is the brother she seeks and impulsively agrees to marry the stunning beauty who introduces herself as Elijah's intended.
It might have been a while since she'd last seen the twins in New York, but she knows it's Henry who is claiming to be Elijah—she just doesn't care. One Banks brother is as good as the next, as far as she's concerned. Her near ensnarement of and marriage proposal from Elijah was just part of her plan to seek revenge on their family, but Henry will suffice just as well.
When Elijah and his new wife return from their recent trip to Italy, he has a lot of explaining to do. Especially, when, for the safety of his entire family, he has to reveal what he knows about this American beauty: including her plan for revenge.
Now, without giving away either his identity or his heart, Henry must find a way to dissuade his wife from revenge—but he's soon finding that ideas are easier formed than executed and with each attempt to change her mind, he loses a little more of his heart to this enchanting creature.
Not the dimwit everyone has treated her as her entire life, she knows exactly what her husband is about. But while her mind refuses to accept his advances, her heart can't deny them. Everything from his carefree manner to his genuine gestures is a stark contrast to the man she'd been married to before.
But when when her opportunity to seek revenge presents itself, she must decide if it's revenge she longed for, or the love of a good man, because even she knows she can't have both.
(Description from author's website)