yooyunsuk Actor Yoo Yun Suk, currently on the rise for his role as Park Tae Seo on Gu Family Book, recently revealed that he had enlisted in the air force because of his girlfriend, only to face a horrible fate. On a recent episode of Hwasin: Controller of the Heart during a segment called "Honey, I admit that I was cowardly when...," he said, "When I was in training as a soldier, I received a break-up letter from my girlfriend. She was the one who told me to go do air force but once I left, she had wore her rubber shoes backwards." In Korea, the phrase "wearing your rubber shoes backwards" applies to women who have cheated while their partners or loved-ones are serving in the military. He continued his anecdote as he said, "I enlisted in the air force for 2 years and 3 months because she told me that since she lived so close to Seoul airfield, she would visit me often. On top of that the air force had the longest period of service. She didn't reply back or answer her phone call so when I received vacation, I went to see her; in the end she never came back." Yoo Yun Suk added, "I heard that she had gotten a new man. He was someone I knew. A part of me feels like it was my fault for not being able to be there for her." What's the most cowardly thing a loved one has ever done to you? (Source: http://www.mydaily.co.kr)