
Like what tf? Why did he do that? He worked hard and gifted him a costly Keychain and in the end to get it thrown in front of it...bro if It was me I would've smacked him and left the place fr.

if you're wondering why jaekyung got heated at all - it's because he noticed kim dan leaving his house to work at god awful times at night. he realized kim dan had been working himself to the bone just so he could afford to buy jaekyung a keychain that jaekyung could've afforded himself.
but because jaekyung is fucking insane - instead of being like the normal tsundere archetype he's supposed to be and say "hmph, you shouldn't have. but i guess i'll take it..." - he overreacts, throws a tantrum and throws the keychain at kim dan. it's supposed to show he 'cares' for dan but like... bro. who are you kidding?
Dude what the actual fuck? First you're crying that the duchess was cheating on you , you think of Anna about how she truly loved you , then the next second you go back to that bitch to fuck
In short mf was horny asf
I think the author intended for Lily to feel like Anna did when she saw Lily do the same. Their scenes were pretty much the same. Dunno. Pretty shitty story.