On the August 1st episode of SBS's 'Healing Camp', actor Ji Sung decided to share some cute stories from his 4-year relationship with actress Lee Bo Young. During the show, a person commented that Ji Sung seemed like someone who would act cute and charming towards his girlfriend. He confessed, "Actually that's true. When she is unhappy about something, I will try to act cute by doing things like puffing up my cheeks to cheer her up". He continued, "I also sing her songs before she goes to bed", and sweetly sang the popular song "It's Fortunate" by Lee Juk on the spot, causing an envious reaction from female MC Han Hye Jin. Ji Sung also talked about the fireworks event he once threw for his girlfriend, saying, "On my girlfriend's birthday, I wanted to throw her a fireworks show that she could watch from her balcony. I went ahead with the plan even though I knew that the neighbors would complain if it occurred too late at night." He continued, "My manager and I prepared fifty firecrackers in front of her home and lit them. My girlfriend expressed that what touched her more than the event itself was the scene of my manager and I running away in case the police came." The happy couple first started dating in 2007 after meeting on the set of SBS's drama, 'Save the Last Dance for Me', and have been in a relationship for the past four years. Meanwhile, Ji Sung is currently busy filming for the upcoming SBS drama, 'Protect the Boss'. Source + Photo: My Daily, Star News via Daum