According to a fanaccount by Chantal,
GD is known to be close to Yoobin of WG and Nicole of Kara.
Her fanaccount describes what each Big Bang member does and is known for, something she observed, during her stay in Korea. Read more of her fanaccount here
Credits: juang_bb@Soompi / Big Bang – Official Soompi Thread/ Chantal
Thanks to: Nurika