Scandalous: Family Ties and Spies by Monica Burns

Scandal forces a plump country mouse and a devilish cat to marry.

She’s not the meek mouse he expected
Amalie Rockwood possesses the an dara sealladh, which has been passed down to her from her Scottish ancestors. The first time she met Valeran, her psychic ability revealed how dangerous the earl was to her heart. To avoid scandal and a loveless marriage, Amalie hides her plus-size curves in the shadows like a plump country mouse hiding from a cat. Her fear of Valeran becomes loathing when she overhears someone challenge him to seduce her. But when she’s caught by the cat in a compromising position, Valeran’s kisses set her body on fire. Now, Amalie’s married to a man who will break her heart, but whose touch she can’t live without.

He’s far more dangerous than she realized.
A master of martial arts, Valeran Rutherford, Earl of Sommerville, turned his blindness into an advantage hunting Prussian spies for the Crown’s Secret Intelligence Service. When Amalie is found in his rooms, Valeran is livid at how easily he allowed the witch’s voluptuous curves and bewitching, siren’s voice to ensnare him as a husband. Marriage is inevitable, but Valeran finds his Scottish spitfire of a bride impossible to resist. Beneath his fingers, Amalie’s lush body is as beautiful as her lilting cries of ecstasy. Now with each passionate kiss, Valeran is forced to realize he’s facing two enemies—a Prussian spy and his wife’s ability to capture his heart.

Their fiery passion is certain to make lovers of enemies.