Kim's first mistress, Song Hye-rim, was a star of North Korean films. She was already married to another man and with a child when they met. Kim is reported to have forced her husband to divorce her. This relationship, started in 1970, was not officially recognized. They had one son, Kim Jong-nam (1971–2017), who was Kim Jong-il's eldest son. Kim kept both the relationship and the child a secret (even from his father) until he ascended to power in 1994. However, after years of estrangement, Song is believed to have died in Moscow in the Central Clinical Hospital in 2002.