from Wiki
Song kept in touch with Hyun Bin after The World That They Live In ended, but it was their separation while Hyun was filming Friend, Our Legend in Busan that made them realize they were in love. They announced their dating status in June 2009.[30][31] In March 2011 mere hours after Hyun's military enlistment, his and Song's agencies confirmed speculation that the couple had broken up. According to the joint press release, "Both have been very busy shooting films and dramas both in and out of Korea, which inevitably caused them to grow apart." With rumors of their separation circulating since late 2010, the agencies said the two split up in early 2011 but wanted to keep it secret for the time being "because neither of them wanted the public attention to be directed on their split instead of their professional work. Hyun also did not want a personal issue to interfere with his last days with his fans before starting his military service."[32][33][34]
Asked about the aftereffects of her two romantic relationships that caught the public's attention, Song said in October 2011, "I think the time when I felt uncomfortable about living under a microscope has gone. I'm no longer afraid of such things. What I did was typical of any woman my age. In fact, I haven't had any time to feel lonely."[17]