Knowing one's own desires

Do you know your own desires in some way that other people cannot know them? Richard Moran claims that his influential theory of first-person authority over beliefs and intentions can also cover desires. However, his deliberative model can apply to desire only if one already has some other way of knowing one’s own desires. Jean-Paul Sartre’s conception of pure reflection, on the other hand, portrays a direct epistemic access to one’s own desires that can ground fundamental first-person authority over desires and intentions