The interaction between the two was sweet in an unorthodox way that suited them, and the sex scene was full of lovely phrases. This entire paragraph really stood out to me:
He made himself turn his attention to the ribbons of her petticoat waist, no doubt worn for added warmth in this chilly castle. Once he had tugged them sufficiently loose he slid his hands inside the waistband and eased it down her hips, along with the second petticoat he found under it, revealing her knickers and fine wool stockings. She stepped out of the folds of linen and wool, kicking her shoes off. He knelt at her feet and clasped the backs of her thighs above the stocking tops. It pleased him that she was dressed for warmth and comfort, not to seduce. He would rather be the object of an impulse than a campaign.
This is such a good representation of the two characters, in ways I hadn't even considered before.