KeyEast, the talent agency Bae founded and that handles them both, said the two had known each other for some time but their relationship blossomed in February this year.
Only a small handful of people at KeyEast knew about the relationship. When Bae and Park went on a date, they went with their friends or managers to avoid public attention.
"Most KeyEast staff only learned of the relationship a couple of days before the announcement has made", a staffer said.
The two have already met each other's parents and the wedding is planned for sometime this fall.
Bae made his debut in 1994 in a TV soap and became a superstar with the 2002 mega hit "Winter Sonata". His immense popularity in Japan and Asia paved the way for Korean Wave.
Major Japanese media including the Yomiuri Shimbun, Nikkan Sports, and Sankei Sports reported the news of Bae's wedding plans.
Park started out with girl band Sugar but switched to acting in 2006 when the band disbanded, though she has had no big success so far. Instead, she became better known as the host of cable channel program "Tasty Road", which introduces restaurants.
The stock price of KeyEast dropped by 5.14 percent on Friday after the news hit the headlines.
[Spoiler] 'Splendid Politics' Seo Kang-joon is shocked at discovering her true identity disguised as man
On the 11th episode of MBC's Monday & Tuesday drama, Hong Joo-won (Seo Kang-joon) was deeply s,...More
[Spoiler] 'Who Are You - School 2015' Secrets of silent bystander of bullying to be revealed
The scar left on Kim So-hyun's body before she had gone missing. The secrets about the scar were r,...More
[HanCinema's Box Office Review] 2015.05.15 - 2015.05.17
"Chronicles of Evil" and "Mad Max" dislodges "The Avengers"... While Cannes is playing host to th,...More
Subscribe to HanCinema Pure to remove ads from the website (not for episode and movie videos) for US$0.99 monthly or US$7.99 yearly (you can cancel anytime). The first step is to be a member, please click here : Sign up, then a subscribe button will show up.