Final answer:
In "Le Morte d'Arthur," Sir Ulfius helps King Uther overcome his lovesickness by advising him on courtly love.
Step-by-step explanation:
In "Le Morte d'Arthur," Sir Ulfius helps King Uther overcome his lovesickness by advising him on courtly love. Sir Ulfius advises King Uther on the virtues and behaviors of courtly love, teaching him to restrain his emotions and directing his affections towards a more noble and attainable object of desire. By following Sir Ulfius' guidance, King Uther is able to overcome his lovesickness and focus on his duties as a king.