Their relationship was first reported through TV Report, but both sides have now admitted their relationship. The two had the same label, and had even acted as a couple twice in dramas. 

Their label said, "We confirmed with In Kyo Jin that he is dating So Yi Hyun. They've known each other for over 10 years. They were always friends, and they've just recently become lovers. It's been about a month. But the news spread fast, so he was a little surprised. They've just started, so he said to watch over them."

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Even though the two can't meet that often, they're always calling each other to see how the other is doing. They've been dating for less than a month, and it turns out that the report that So Yi Hyun was dating Kim Hyung Jun was actually false.

Congratulations to the new couple!