Korean actress Lee Sun-bin (이선빈) and Lee Kwang-soo (이광수) have maintained a stable relationship for years, their low-key yet sweet romance consistently drawing public attention. Lee Sun-bin recently discussed her views on relationships, revealing she always video calls Lee Kwang-soo whenever she meets male friends to reassure him. She also openly shared her attitude toward a partner's infidelity, sparking discussion with her straightforward response.
In a recent video released on the YouTube channel “12th Floor” (열두시), Lee Sun-bin answered a series of relationship-related questions, sharing how she interacts with her partner.
First, she was asked, “If a partner you truly love cheats, would you rather they tell you honestly, or would you prefer not to know at all?” Faced with this binary choice, Lee Sun-bin opted for “not knowing.”
She explained, “If it’s not just once, but an ongoing situation, then I would want them to tell me honestly. But if it’s only once, I would choose the latter, meaning not to tell me.” She indicated her attitude would differ depending on whether the infidelity was a repeated occurrence.

When asked about her partner’s friends of the opposite sex, Lee Sun-bin described herself as someone who gives her partner ample trust. She revealed that every time she meets male friends, she video calls her boyfriend, stating candidly, “There hasn’t been a single time I’ve gone out with male friends without video calling my boyfriend.” She added, “If I go to this extent, it should be fine to have male friends, right?” She believes there’s no need to deliberately hide meetings with friends of the opposite sex; simply letting one’s partner know the plans naturally can reduce unnecessary suspicion.

Lee Sun-bin and actor Lee Kwang-soo publicly confirmed their relationship in 2018 and have maintained it for nine years, making them one of the entertainment industry’s well-known long-term couples. Since going public, they have rarely engaged in overt public displays of affection, but occasionally express their love for each other through interviews or public appearances, always maintaining a stable relationship.
In fact, Lee Sun-bin recently spoke about her communication style with Lee Kwang-soo during an interview to promote her film, *The Secret of College Entrance Exam Questions*. When asked about their usual messaging habits, she laughed, “We both love sending very long, detailed messages. It’s mutual!” unexpectedly revealing a sweet aspect of their daily interactions.
Lee Sun-bin’s film, *The Secret of College Entrance Exam Questions* (수능, 출제의 비밀), is set against the backdrop of the Korean College Scholastic Ability Test (CSAT) question-setting process. It tells the story of Meng Bo-ram, a Korean language teacher from a small provincial town, who unexpectedly joins the question-setting headquarters, a facility where staff are secluded for 40 days to work on this task, which is classified as a Level 2 national secret in Korea. The film, presented as a mission comedy, depicts a series of chaotic incidents that occur as the team strives to create exam questions free of errors and controversy. *The Secret of College Entrance Exam Questions* is currently showing in Korean cinemas.


