How Long I've Kissed[1] (Korean: 아내의 자격; RR: Anaeeui Jagyeok; lit.

A Wife's Credentials) is a 2012 South Korean television series starring Kim Hee-ae, Lee Sung-jae, Lee Tae-ran and Jang Hyun-sung.

It aired on JTBC from February 29 to April 19, 2012.

[2] The story of a struggling housewife who starts having an affair with her younger neighbor.

In this table, the blue numbers represent the lowest ratings and the red numbers represent the highest ratings.