The Only Love I Know summary: Hari Lee, a girl who’s busy balancing both part-time jobs and school, falls for her senior at school, Jinho, but her one-sided love ends without her getting the chance to confess when Jinho starts dating her friend, Yeonju, instead. 3 years later, Jinho and Yeonju are still together and Hari has gotten over Jinho, but Jinho suddenly starts drunk-calling Hari and confessing to her? To get rid of Jinho, Hari, who has no time for romance, accidentally agrees to a blind-date with a guy Yeonju knows. This is the story of their romance!