Betrayal (Pendyffryn: The Conquerors, #3)
Lily Dewaruile

Disappointment does not kill a man. Disinterest. Submission. Less than all he had thought he had gained, grueling day after day of war and Gwennan’s cold indifference dismay him. Her happy laughter had once filled him with hope that his gamble had won him a home and the love of woman he had risked the lives of his children to wed.
In the company of her friends on a beautiful day, a reckless venture to escape her anguish brings Gwennan face to face with the evil her husband once served. Betrayal is not always about love.