Nayeon made Dahyun realize a lot of things in a span of 3 days or where New York became a playground for two lovebirds. 

Just a common Dayeon frenemies trope battling the "Old habits die hard." Uncle Quotes. So used to fighting that they often forget they're already dating. 

Sana found home in a junior who's always wearing pastel blue hoodies and a dinosaur enthusiast.