The foreshadowing when she told him that ring was hers tho, now he can't return it and of course they are gonna fall for each other. But how convenient he has a ring that she wanted?
Of course she picks the man she just met over the guy she trusted for 8 years. Ain't no way (and I say this as a girl) you have a male best friend who's literally always there for you and you have no idea he has feeling for you. It's rather you know and choose to ignore it (whilst refusing his kindness) or you know and take advantage of him.
I really like nonsensical dramas but this isn't it, the child actress was hood tho. However that underwear scene reminded me of HIY okie dokie yo scene 🤣🤣🤣🤣 and please someone get the blush off her cheeks.
K-Drama 
Go for it, I won't cheer for you though.
I love it ❤