To Catch a Viscount by Christi Caldwell

Miss Marcia Gray’s cameo-perfect life is destroyed when scandal leaves her standing alone at the altar on her wedding day. Her heart shattered, she decides to embrace her ruined reputation and explore every forbidden pleasure. All she needs is a little help from her long-time friend—and society’s most wicked rogue—Andrew Barrett, Viscount Waters.
Andrew tried his hand at love and lost badly, and has no interest in marriage or respectability. Nonetheless, even he knows he should avoid Marcia and her harebrained attempts to embark on a life of impropriety. Andrew, however, has never done what he’s supposed to do, nor can he stand about twirling his sword cane while Marcia dabbles in forbidden pleasures without him.
When they push the boundaries too far, Marcia and Andrew must determine whether old secrets will keep them apart, or newfound love can forge a path back to a respectable, shared future.