I love plots where the hero or heroine is sick and he or she nurses him/her back to health. In this case though, the wounded, feverish, amnesiac hero takes only two or three nights to not only get perfectly well but also have hot sex with the heroine.
My basic problem though was the heroine. She knew after finding the hero stranded in the beach after a shipwreck that he was a noble, not English like her and also knew that her sister's betrothed, Prince Rhodri of Wales who speaks Welsh (obviously), was lost in a shipwreck and is missing for 3 or 4 days, yet fails to put two and two together and sleeps with the strange man. I can only attribute that either to extreme stupidity or to refusal to acknowledge the obvious so that she could justify sleeping with her sister's betrothed. In either case, I don't care for her and her HEA one bit.
And the playboy hero, knew after sleeping with her once and spending 3 nights with her, the first two almost unconsious and with barely any discussion between them, that she's the woman for him, lol!
The fact that I managed to finish it, is the only reason I don't rate it with one star.