A term frequently used by ARMY (BTS fandom). It is a very special name given specifically to the international ARMY from its Korean counterpart.
This name serves as a symbol of the strong bond shared between the fandom even being continent/countries apart. According to the Korean ARMY, the international counterpart exhibits the trait of being "Lovely", therefore, in recognition and response to the tremendous amount of love, support and dedication they have been showing to BTS, the Korean ARMY crowned their international counterpart as being "International Lovelies", abbreviated as "I-Lovelies."
ARMY 1: Can someone please translate these tweets to Korean for our K-Diamonds?
ARMY 2: What's this about?
ARMY 1: It's a compilation of appreciation letters written by some I-Lovelies.
K-Diamonds (Korean A.R.M.Y) gave this nickname for BTS’ international fans. Because International A.R.M.Ys and Korean A.R.M.Y have this wonderful and adorable relationship, that’s why I-Lovelies cherish this nickname so much and why it means so much .