You and Hyunjin is currently at a date but then..

A female waiter came and took your guy's orders, but you noticed the waiter biting her lip and checking your boyfriend out, you felt jealous but kept quiet.

The whole date was alright, except for the waiter coming back repeatedly, looking at your boyfriend and winking at him, at the end of your date she slips a note in hyunjin's pocket, her number on the paper