Jealousy Is My Middle Name(2003)

Original title: 질투는 나의 힘

Quiet, intelligent, solemn and recently dumped by his girlfriend, graduate student Lee Weon-san takes a job at a literary magazine, ostensibly to supplement his income, but really to get close to the editor - the reason he’s now single. The editor, unaware of who Lee is, takes a shine to him and makes him his personal assistant.