I have a question about the nature of the IEI /SLE duality. Two of my close friends are IEI and SLE duals, and my IEI friend, when I explained socionics to her raised a concern about the "moody" nature she perceives in her SLE friend. In her words, the friend's moods swing back and forth between elation and antisocial dejection (not the clinical kind or anything). And whereas I, and ILI, tend to handle the SLEs moods by being either apparently oblivious, or just by amusedly observing them, the IEI becomes frustrated in attempting to either soothe the SLEs worries or share in her emotional highs. She speak of "running after the SLEs mood swings" and having to "keep up with them", ultiately becoming extremely flustered and "exhausted."
Is there anything in the SLEs phsycological type that would lead to moodiness, and what role would this play in the SLE/IEI duality? Or would you say this is a particularity of our friend?