According to Jang Ki Yong's label YG Entertainment, "The two have already parted ways... Please cheer on Jang Ki Yong so that he can focus on his current production." Lee Ye Na's side similarly stated, "After confirming with the individual, we learned that they've broken up. They decided to remain close acquaintances... Please cheer her on, as she plans on promoting as an actress actively from now on."
Jang Ki Yong first debuted as a model before delving into acting with 'It's Okay, It's Love', 'Beautiful Mind', 'The Liar and His Lover', and most recently, 'Confession Couple'. Lee Ye Na previously made a cameo appearance on tvN's 'Circle: Two Worlds' last year.
Best of luck to them both.