A snippet of Kill Me Heal Me OST part 3 "Unspeakable Secret" was played on episode 6 preview
nuguegedo malhal su eomneun bimil
nuguna hanajjeum
geureon ge inneun geo janha
teukbyeolhal geotdo eomneun georago malhaedo
mudeomdeomhancheok haedo apa
ireon nareul sarang hajima
nae mami ireongeol eotteokhae
neoege jul su inneun geon
gojak meomchuji annneun nunmurinde
cheoeum boneun natseon eolgullo
ni maeume sangcheoman jul nainde
na honjaman neol
saranghage nwadugo
ganda
oeroumjocha oraedoen chingugata
iksukhaejilman hande
I miss you
ireon nareul sarang hajima
nae mami ireongeol eotteokhae
neoege jul su inneun geon
gojak meomchuji annneun nunmurinde
cheoeum boneun natseon eolgullo
ni maeume sangcheoman jul nainde
na honjaman neol saranghagehae
ireon naege dagaojima
nae mami ireongeol eotteokhae
apeumi nege ormeulkka
aesseo mireonaeneun geol neon moreugetjiman
niga saranghaetdeon nal itgo
neol ullyeotdeon nappeun naman gieokhae
saranghandaneun mareun motaedo saranghae
