Fans of Single’s Inferno 3 woke up to a surprise as Lee Gwanhee and Yoo Sieun officially confirmed they are dating, despite never choosing each other during the hit Netflix dating show. The unexpected romance has quickly become one of the biggest post-show love stories in the franchise, with many viewers calling it proof that the “real ending” happened long after the cameras stopped rolling.
According to an exclusive report from Sports Chosun, Lee Gwanhee and Yoo Sieun have been in a relationship since December 2025. Although Gwanhee ultimately chose Choi Hyeseon in the show’s finale while Sieun paired with Choi Minwoo, the two reportedly remained close after filming ended and gradually developed feelings for one another.
Their friendship didn’t happen overnight. The report states that they continued meeting through various gatherings after the program, with fans previously spotting Yoo Sieun attending the 2024 KBL All-Star Game, where Gwanhee was participating. At the time, many assumed they were simply maintaining a friendship with fellow cast members. Looking back, however, fans now believe those appearances may have been early signs of a relationship quietly developing behind the scenes.
As they spent more time together, their friendship reportedly evolved into romance. Sports Chosun even obtained photos of the pair enjoying a date together at an aquarium, adding further confirmation before the couple made things official themselves.
Rather than allowing rumors to continue spreading, Lee Gwanhee and Yoo Sieun chose to address the news directly through a joint Instagram statement.
The couple wrote:
“Hello, this is Lee Gwanhee and Yoo Sieun.
Today, we wanted to share some happy news about the two of us. During the past months, we’ve spent time getting to know each other while receiving so much warm support from everyone, and we felt it was the right time to share our feelings with you personally.
We plan to continue cherishing and supporting one another while building a beautiful relationship together.
We hope for your continued interest and support.
Thank you.”
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The announcement immediately sent fans into celebration across social media. Many admitted they never expected Gwanhee and Sieun to become a couple after watching Single’s Inferno 3, making the relationship one of the franchise’s biggest surprises.
For longtime viewers, the news also reinforces one of the show’s recurring themes: not every real love story ends on the island. While the final episode determines each contestant’s official match, several relationships from previous seasons have continued—or even begun—after filming concluded.
In this case, the pair’s decision to openly confirm their relationship instead of hiding it has been widely praised by fans, many of whom congratulated the couple and wished them happiness moving forward.
Nearly two years after Single’s Inferno 3 first introduced them to audiences, Lee Gwanhee and Yoo Sieun have now written a completely unexpected final chapter to their reality show journey—one that nobody predicted, but many fans are thrilled to see become reality.
