SPOILER~

Sorry if my eng is bad. And sorry for long story (▰˘◡˘▰)
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-so after the fight between taehwan and taehee (chapter 61) he got out of the house and go to the bar
-he then met yeonwoo at the bar. yeonwoo's friend is there~ the girl (i dont know if shes just a worker there or the owner)
-taehwan and yeonwoo talked until yeon got drunk
-so the girl which is friend of yeon came up with a plan and ask taehwan to bring yeon home
-so taeh bring yeon home but before he left yeon said something and kissed taeh?
-then taeh said something (i dont know what is it) and yeon gave taeh a blow**b
-after that night taeh dreamt of him having se* with yeon
-and in school he call for yeon and said something
-then they become sex friends. they didnt kiss while hving sez :(