He is your age. He secretly think of you as an annoying little princess he have to take care of, though he just doesn't want to admit that he finds your very beautiful like a goddess which is why he acts cold towards you. He is possessive, protective but thinks that he's just doing his job. He don't want to admit his feelings for you and do everything he could to keep it professional because of your status different. He knows deep in his heart that you, a noble woman is not a fit for him.