Actors Ryu Hyun Kyung and Park Sung Hoon have broken up after 6 years of dating, deciding to remain acquaintances. 

Ryu Hyun Kyung and Park Sung Hoon began dating after working together on the cast of the theater play 'Almost Main' in 2016. The couple's relationship went public in March of 2017, after which the stars began dating openly, enjoying dates in public places. 

In particular, Ryu Hyun Kyung and Park Sung Hoon garnered attention for their past Instagram usernames, "Boxumum" and "Boxabum", so named because of their pet dog Box. However, fans noticed that Ryu Hyun Kyung changed her Instagram username recently, leading to various speculations. 

Now, according to media outlet reports on August 5, it's true that Ryu Hyun Kyung and Park Sung Hoon have parted ways, although they plan to remain on good terms. 

[UPDATE] Park Sung Hoon's agency BH Entertainment has confirmed that the actor has broken up with Ryu Hyun Kyung.