Harlequin Presents, Series by Sara Craven

Darcy Langton is stunned when she finds herself engaged to businessman Joel Castille--traded as part of a business merger! While Joel represents everything that she detests in a mate, he's also the most charismatic man she's ever met. Joel has no intentions of honoring their in-name-only agreement, and away from the boardroom Darcy is unable to resist his sensual persuasions. But when Darcy makes a shocking discovery, Joel must win her back--or risk losing his most valuable asset forever....