0:14 Hyewon was actually thinking that there was a nearby cheese tteokbokki and cheese dakgalbi place that delivers and wanted to look into Chaewon's eyes to make sure that if she orders both that Chaewon will split it with her. :)
It's Yuri's fault for putting Yujin's hand there. She knows Yujin loves to troll. Probably why Yuri did it and then acts "shocked" at Yujin doing that. :)