Spoiler In Words: Romance Town Episode 2

Soon Geum has become the successor to the maid who cared for Kang Gun Woo like a son, Choon Jak. So she pretends to be Choon Jak and exchange letters with Gun Woo who is in New York, but her heart skips a beat every time she receives those letters. 

Three years later, Gun Woo finally comes back to Korea. Not knowing that Soon Geum has become a maid in his household, she forms a good impression on him despite having not seen each other for three years. However Soon Geum does not recognize the changed Gun Woo (i.e the slimmer 6-pack one *wink*).