To Have and to Hold by Terri Mackenzie

She’s sure she’ll never love him. He’s sure he’ll never stop.
All Sir Percy Somerville wanted from his wife was her love. But after watching her meet his devotion with coldness for four years, he makes the devastating choice to withdraw his heart before it shatters completely.

Lady Cecily Somerville thought she loved another when Sir Percy arranged their marriage, and four years hasn’t been sufficient to eliminate her resentment. But just as she discovers her former love was not the honourable man she supposed him to be, Percy retracts his attentions. Left to stew in the consequences of her actions, she begins to question what love is, and if she could ever love her husband.

The trouble is, she might have left it too late to win him back.