Girl's Day's Hyeri and GOT7's JB explained how they became friends on the October 6th episode of 'Amazing Saturday'.

 
Shin Dong Yup saw how friendly Hyeri and JB were and immediately started asking questions. The Girl's Day member seemed taken aback by the questions, and Shin Dong Yup pressed, "I guess we shouldn't go too deep into the relationships of idols."

JB immediately responded, "We're college friends. She spoke to me informally on our first meeting. We became friends naturally."

Hyeri and JB are both majoring in film at Konkuk University. Did you know they were friends?