Yoon Jin-seo (born Yoon Soo-kyung, 5 August 1983) is a South Korean actress.
 Yoon has starred in films such as "Oldboy", "All for Love", "A Good Day to Have an Affair", and "Secret Love".
 She also appeared in a variety of TV series — historical drama "The Return of Iljimae", action comedy "", and cable romantic comedy "Twelve Men in a Year".
Coffee Mate () is a 2016 South Korean melodrama film written and directed by Yi Hyun-ha, starring Yoon Jin-seo and Oh Ji-ho.
Santa Barbara () is a 2014 South Korean romance film starring Lee Sang-yoon and Yoon Jin-seo.
 It was written and directed by David Cho (also known as Cho Sung-kyu).
The Return of Iljimae () is a 2009 South Korean historical action television series, starring Jung Il-woo in the title role of Iljimae, Yoon Jin-seo, Kim Min-jong and Jung Hye-young.
 It aired on MBC from January 21 to April 9, 2009 on Wednesdays and Thursdays at 21:55 for 24 episodes.
Twelve Men in a Year (, also known as 12 Signs of Love) is a 2012 South Korean television series, starring Yoon Jin-seo and On Joo-wan.
 It aired on tvN from February 15 to April 5, 2012 on Wednesdays and Thursdays at 23:00 for 16 episodes.
The Girl Who Sees Scents () is a 2015 South Korean television series adapted from the webtoon of the same title by Seo Soo-kyung a/k/a Man Chwi.
 Starring Park Yoo-chun, Shin Se-kyung, Namgoong Min and Yoon Jin-seo, it aired on SBS on Wednesdays and Thursdays at 21:55 for 16 episodes from April 1 to May 21, 2015.
Traces of Love is a 2006 South Korean film directed by Kim Dae-seung, and starring Yoo Ji-tae, Kim Ji-soo, and Uhm Ji-won.
 The film is based on the Sampoong Department Store collapse, which took place in 1995.
Jackpot (), also known as The Royal Gambler, is a South Korean historical drama starring Jang Keun-suk, Yeo Jin-goo, Jun Kwang-ryul, Choi Min-soo, Yoon Jin-seo and Lim Ji-yeon.
 It replaced "Six Flying Dragons" and aired on SBS on Mondays and Tuesdays at 22:00 (KST) from March 28, 2016 to June 14, 2016 for 24 episodes.
Yoo Ji-tae (born April 13, 1976) is a South Korean actor, film director and screenwriter.
 After a stint as a fashion model, Yoo launched his acting career in 1998 then rose to fame through the films "Attack the Gas Station" (1999) and "Ditto" (2000).
 In the succeeding years, he gained acting recognition by working with acclaimed directors such as Hur Jin-ho in "One Fine Spring Day" (2001), Park Chan-wook in "Oldboy" (2003), and Hong Sang-soo in "Woman is the Future of Man" (2004).
 Yoo began directing short films in 2003, which were well received in the film festival circuit.
 His feature directorial debut "Mai Ratima" was released in 2013.
Secret Love () is a 2010 South Korean film starring Yoo Ji-tae and Yoon Jin-seo, who previously worked together in "Oldboy".

Question: Yoon Jin-seo, is a South Korean actress, and has starred in films such as which 2010 South Korean film starring Yoo Ji-tae and Yoon Jin-seo, who previously worked together in "Oldboy"?
Answer: Secret Love