Instead of asking for phone numbers, some idols opt for a more subtle approach by secretly leaving their contacts for the ones they have their eye on. In the K-pop industry, it is something of a tradition for idol groups to visit sunbae (senior) idols dressing rooms to say hi and introduce their new albums.

Are K-pop stars allowed to date?

JYP Entertainment has a strict three-year ban on new idols dating, trainees are forbidden from using their phones or meeting members of the opposite sex, and Twices Momo was once ordered to lose 7kg in a week – what it really takes to make it in K-pop.