It all started with laughter and banter. In September 2016, Lee Sun Bin appeared as a guest on SBS’s long-running variety show Running Man, where Lee Kwang Soo was a main cast member.

Their on-screen chemistry was electric. During the episode, Lee Sun Bin jokingly declared that Kwang Soo was her ideal type—and what began as a playful comment quickly turned into a real-life spark. According to industry insiders, the connection they formed that day blossomed into something much deeper off-camera.

After quietly dating for several months, Lee Kwang Soo and Lee Sun Bin confirmed their relationship on December 31, 2018. By then, they had already been together for about five months. Reports noted that Kwang Soo had introduced Sun Bin to his close friends, including top stars like Jo In Sung and EXO’s D.O., a sure sign things were serious.

Their agencies confirmed the news, stating that the two were indeed dating and had grown close through shared values and time spent together.

Over the years, both Lee Kwang Soo and Lee Sun Bin have spoken candidly about their relationship in various interviews.

While promoting his film Inseparable Bros, Kwang Soo shared how going public had changed their dynamic.

“Before we went public, we were able to meet comfortably outside, but after the news broke, it became burdensome,” he said in a 2019 interview.
He also credited Running Man co-star Yoo Jae Suk for offering heartfelt support during that transition.

In 2021, while promoting the disaster comedy Sinkhole, he revealed that their relationship had settled into a comfortable rhythm.

“We go out to eat at delicious restaurants, and we don’t really hide it anymore,” he said, describing their dates as ordinary and low-pressure.

During a 2023 press event, Kwang Soo confidently stated:

“It’s still going well. We don’t have a clause where we shouldn’t meet in public.”
Their openness and steady affection have impressed fans, showing that celebrity couples can maintain strong bonds even under public scrutiny.

In a March 2025 feature by Sports Chosun, Lee Sun Bin was quoted as saying she prefers a bold, direct style of love—“Don’t play hard to get,” she said with a laugh. By then, the couple had been together for nearly nine years—a rare and inspiring milestone in the world of celebrity relationships.

Lee Kwang Soo and Lee Sun Bin’s relationship is heartening not just because of its longevity, but because of how grounded and sincere it feels. Their story—from a playful TV moment to a lasting bond—has given fans a rare glimpse into a celebrity romance built on friendship, respect, and shared humor.

Whether you’re a fan of Running Man, Korean dramas, or simply believe in love that lasts, Kwang Soo and Sun Bin’s story is one worth cheering for.