'Single's Inferno 4' contestant Yook Jun Seo raised anticipation that he had become a couple with Lee Si An in real life after posting a photo on Instagram.
On February 13, Yook Jun Seo shared a special moment with Lee Si An on his Instagram with the hashtags "#netflix #SinglesInferno4". In the black-and-white photo, Lee Si An is seen with her arm around Yook Jun Seo’s waist, looking cozy together.
The natural physical closeness between the two sparked a lot of attention, with fans reacting intensely. Comments included, “They’re definitely a real couple!”, “So are they or aren’t they? I’m getting dizzy!”, “Jun Seo and Si An forever!”, “They look so good together!”, and “Happy because of Yook Jun Seo and Lee Si An!”
Along with the photo, Yook Jun Seo wrote a heartfelt letter, saying, “Like everyone else, I spent every day sincerely. I don’t know how often there will be moments where I can express my genuine feelings. I’m happy I could laugh and cry together! Thank you!! 2025.02.13,” sharing his thoughts on the experience.
'Single's Inferno 4' garnered a lot of attention with its attractive cast, including Yook Jun Seo, actor Jang Tae Oh, model Kim Tae Hwan, Lee Si An from 'Produce 48,' sports announcer and former Miss Chunhyang Kim Min Seol, Miss Korea 2020 winner Kim Hye Jin, and Park Hae Rin from 'Mix Nine.'
In the finale, which aired on February 11, four couples were formed: Yook Jun Seo and Lee Si An, Kook Dong Ho and Kim Ah Rin, Kim Tae Hwan and Bae Ji Yeon, and Ahn Jong Hoon and Kim Hye Jin.
Before the final decision, Lee Si An reflected on her relationships with the three male contestants who chose her, saying, “I laughed the most with Tae Oh, I felt the most emotions with Jun Seo, and I was happy with Jung Su because he took me to the first paradise and the last paradise together,” but ultimately chose Yook Jun Seo, calling him the person she liked the most.
'Single's Inferno 4' has also achieved global success, ranking 6th in Netflix’s World Top 10 TV (non-English category) and reaching the Top 10 in 23 countries, including Singapore, Taiwan, Hong Kong, Japan, Thailand, Canada, and Brazil. This marked the highest viewership for the show's first week.
Viewers have been discussing the potential for the couples' real-life relationships, with many believing that the Yook Jun Seo & Lee Si An couple and the Kook Dong Ho & Kim Ah Rin couple have the highest likelihood of continuing as real-life couples.
Especially after Lee Si An expressed, “I want to be a real couple after the show and do a public relationship,” excitement for the possibility of Yook Jun Seo and Lee Si An becoming a couple in real life has reached new heights. In an interview on February 13 with News1, the 'Single's Inferno 4' production team said, “It would be rude to label someone a 'real couple' at this stage, but we’ve asked the cast to honestly reveal everything now that the program has ended. We expect them to share in their own way,” sparking curiosity.
Yook Jun Seo’s latest post with Lee Si An is seen as a hint that their relationship may continue beyond the show, drawing attention from fans.
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