"For First Time Lovers" (Korean: 처음 사랑하는 연인들을 위해, subtitled Banmal Song [반말송]) is Jung Yong-hwa's first solo digital single which was released on 14 January 2011.

Seohyun is known to have difficulty dropping honorifics with those who are older than her, and the song is inspired by Yonghwa's desire to hear her speak to him in 'Banmal'.

The song was released as a single on 14 January 2011 and upon its release, topped various South Korean music charts such as Bugs, Daum, Soribada and Naver Music.

[4] In the 64th episode of the second season of We Got Married, the virtual couple 'YongSeo' (a portmanteau of the couple's names) were given a mission to record and upload a music video of the song on YouTube.

The two filmed it in the living room of their house in the show, with both of them playing guitars as they performed it.