*Credits to the person who came up with this :) *

2AM not a fan, but I only know Jokwon. lol
2NE1 CL and Dara
2PM Nichkhun
4minute Gayoon and HyunA
AOA Yuna and Mina
After School Joyeon
APink Namjoo and Chorong
Bangtan Jin and V (also Jungkook)
B.A.P Daehyun and Zelo
B1A4 Jinyoung and Gongchan
Beast Hyunseung
Big Bang G-Dragon and T.O.P
Block B Jaehyo (almost all of them but Jaehyo's first)
Brown Eyed Girls - 
BTOB Sung Jae 
C-Clown Rome and Kangjun
CNBlue Jonghyun
Dalmatian - 
Dal Shabet Woohee and Serri
DBSK/DB5K Jaejoong
EXO K Sehun
EXO M Kris (almost all of them but least of Tao)
f(x) Luna
F.Cuz -
FIESTAR Jei and Cao Lu
FT Island not a fan but I know Hongki
Girl's Day All of them but Minah's first as of now
Girls' Generation Tiffany and Taeyeon
Hello Venus Nara and YoAra
History - 
Infinite Myungsoo/L
JJ Project - 
Kara Gyuri
LC9 Eden
MBLAQ -
Miss A Fei
MYNAME -
Nine Muses - Kyungri, EuAerin, Hyunah, Saem, Sera (almost all of them)
NU'EST JR, Aron (and Jason, the 6th member of NU'EST M)
Secret Jieun and Zinger
SHINee Jonghyun, Onew and Taemin
Shinhwa -
Sistar Bora and Hyorin
SS501 - 
Sunny Hill - 
Super Junior Kyuhyun and Henry
T-ara Qri and Hyomin
Teen Top L.Joe and Changjo, also Niel
U-Kiss Kiseop and Eli
VIXX Hongbin, Leo
Wonder Girls Yubin and Yenny
ZE:A I know them but I haven't know the names of the members yet