You're Jimin. (Jimin 17 years old Yoongi 21.)

Jimin and Jungkook went to a class camp, they had a room for two. Jimin sat down on the bed, putting his phone aside.

Jungkook: Jimina, are you going outside with me?

He pointed to the balcony door, Jimin stared after him.

Jungkook: We won't meet anyone and nobody will see that we left at night.

Jimin nodded and put the e-cigarette under the pillow so that no one would find it.