Tied To A Beast.

When Trisa's sister Nancy runs away the night to her wedding, Trisa's aunt forces her to take Nancy's place in marrying the wicked, heartless human being named Ethan. She ends up marrying him but when he finds out he'd been deceived into marrying the wrong girl he gets infuriated and starts making her life miserable, things get worse as Nancy returns to join the party. Find out what happens next in this book!