Seoul (CNN) -- Pictured giggling on a park bench, 89-year-old Lee Soon-sang and his wife, Kim Eun-hae, look as though they met just yesterday.
In fact, they married more than 60 years ago. But for half a century, Kim believed her husband was dead, missing in action during the Korean War (1950-53).
Then in August 2004, a telephone call came from China. "I thought someone was trying to make money off me. I got many calls like that over the years from China, but I didn't pay attention," she said.
This was no ordinary call. The voice on the other end of the line shook her to the core. It really was her husband.
"I asked, 'Are you really alive?' He answered, 'Yes, I am alive.' Then I asked if he knew so and so, and he did know them. That's how I knew it was real."
When they finally met, they barely recognized each other. "He was so skinny, he was wobbling in," recalled Kim. "I could only recognize his nose."
In contrast Lee couldn't believe how well fed his wife looked. "She looked like one of those landlords from the old days," he said. "And the propaganda, that all South Koreans are starving to death ... that Americans are taking all the rice and only giving back rotten flour ... I only heard this kind of propaganda, so I thought she was dead.
"We just held each other and cried."
Lee Soon-sang had been captured by the North Korean army in 1953, two days before the Armistice was signed. He spent three-and-a-half years in a prisoner of war camp and was then sent to work in the notorious coalmines at Aoji, North Korea -- also a production site for gunpowder. There he had remarried and had children -- though he said he never forgot about life before the war. "Life in North Korea was hard', he said. "So I always thought about my hometown. Even though I believed my wife was dead, I always thought I'd go back one day."
Decades later, in 2004, a "broker" got in touch -- they are middlemen who make their living smuggling people in and out of North Korea. "He told me that Kim Eun-hae and my son were in China with lots of money, that I should take the money and go back to North Korea to live a better life."
Aged 77 by then, he had managed to save up 20,000 North Korean won (approximately US$150) selling cigarettes. "In North Korea, that's a lot of money. You could buy a small house with that. I gave that to my wife and said, 'I'm going to pick acorns, I'll be back in two or three days.' That's how I left."
He said he meant to return. But he never did.
He won't talk about the family he left behind. "I'm happy now. You're my wife," he told Kim.
But the bitterness of his choice is a reality for many whose lives and loyalties were split by a divided Korea.
Lee attends a lunch organized for prisoners of war like him -- a group of about a dozen men who meet three times a week, all of whom were held captive in the North long after the 1953 Armistice agreement when Pyongyang agreed to return all prisoners of war.
Kim Sung Tae left his adopted daughter behind in North Korea when he fled in 2001. "How can we see each other unless there's reunification?" He's 81. He does not expect to see her again.
He described the terrible hardships of his life in North Korea, especially the six months he spent in a prisoner of war camp. "We were fed just a few hundred grams of grain a day," he recalled. "I would wake up in the morning and grab handfuls of lice from my body. That was normal."
For more than a decade after, his life was spent in a succession of regular prisons, often in solitary confinement in a cell no larger than the size of a crouching man. "When I came back to South Korea, I asked them to take me to a prison here so I could compare. It was like paradise. South Korean prisons treated their prisoners better than North Korea treated their citizens."
According to South Korea's Defense Ministry, 8,343 former servicemen have returned to the South since 1953. Eighty of those men escaped through a third country decades after the Armistice was signed. Based on their testimony, the Seoul government believes there are still some 500 POWs living in the North. Kim Sung Tae feels the government should do more to bring them home.
Recently, Unification Minister Ryoo Kihi-jae repeated his call for North Korea to resolve the issue of former servicemen and other abductees kept by the North. Pyongyang claims they are there of their own free will. And in the absence of actual talks between the two countries, Seoul has little leverage to orchestrate their release.
Men like Lee Soon-sang and Kim Sung Tae are living proof that Pyongyang is wrong. But many Korean war veterans are now well into their eighties -- no longer at an age where fleeing across treacherous borders is particularly feasible. Men whose fate was sealed when they were taken prisoner 60 years ago may never see freedom again.