Top Korean pop stars Song Hye Kyo and Hyun Bin were reported to be in a passionate relationship. According to the Korean media on August 5, Song Hye Kyo and Hyun Bin starred together in the TV series "Their World" last October, and officially became lovers in June this year. According to the South Korean media reports, Song Hye Kyo and Hyun Bin developed feelings for each other while shooting "Their World"...