'Single’s Inferno 4' Real-Life Couple Confirmed? Yuk Jun-seo Shares Photo with Lee Sian (Letter)

Yuk Jun-seo, one of the final couples from the hit Netflix series Single’s Inferno 4, has heightened speculation about a real-life romance with Lee Si-an after sharing affectionate photos together.

On February 13, Yuk Jun-seo posted a series of black-and-white pictures with Lee Si-an on his Instagram, accompanied by hashtags #Netflix and #Single’sInferno4. In the photos, Lee Si-an is seen wrapping her arms around his waist, exuding a natural and intimate chemistry that sent fans into a frenzy. Their warm interaction, reminiscent of a real couple, quickly ignited discussions online.

Netizens flooded the comment section with excitement, with many speculating about their relationship: "They’re definitely dating, right?" and "So… are they a real couple or not? I NEED ANSWERS!" Others cheered them on, commenting "Jun-seo and Si-an forever!" and "They look so good together." Some fans even joked, "Everything comes back to Yuk Jun-seo!" while others expressed their joy, saying, "Thanks to this couple, I was truly happy watching."

Alongside the photos, Yuk Jun-seo also shared a handwritten letter expressing his gratitude:

"Just like everyone else, I put my heart into every moment. I don’t know how many more chances I’ll have in life to reveal my genuine feelings so openly. I was happy to laugh and cry together! Thank you!! 2025.02.13."

Single’s Inferno 4 gained massive attention with its impressive lineup of contestants. Notable participants included Yuk Jun-seo from Steel Troops, actor Jang Tae-oh, model Kim Tae-hwan, Produce 48 alum Lee Si-an, Miss Chunhyang winner and sports announcer Kim Min-seol, 2020 Miss Korea winner Kim Hye-jin, and MIXNINE contestant Park Hye-rin. The finale, released on February 11, saw the formation of four final couples:

• Yuk Jun-seo & Lee Si-an
• Kook Dong-ho & Kim A-rin
• Kim Tae-hwan & Bae Ji-yeon
• Ahn Jong-hoon & Kim Hye-jin

One of the most intense storylines revolved around Lee Si-an, who found herself in a love triangle with three men—Jang Theo, Kim Jung-soo, and Yuk Jun-seo. Before making her final decision, she reflected on her experiences with each of them:"Theo made me laugh the most, Jun-seo made me feel the most emotions, and Jung-soo took me to my first and last Paradise Date, which was really special."

Ultimately, she chose Yuk Jun-seo, stating, "The person I feel the strongest connection with is Jun-seo."

Single’s Inferno 4 also made waves internationally, ranking 6th on Netflix’s Global Top 10 (Non-English TV Shows) and entering the Top 10 in 23 countries, including Singapore, Taiwan, Hong Kong, Japan, Thailand, Canada, and Brazil. The show also recorded the highest first-week viewing hours of any season in the series.

As the season wrapped up, fans began speculating on the real-life status of the final couples. Many believe that Yuk Jun-seo & Lee Si-an and Guk Dong-ho & Kim Ah-rin have the highest chances of continuing their relationships beyond the show.

Adding to the excitement, Lee Si-an previously expressed her desire to pursue a real relationship after filming, stating:

"Even after the show ends, I want to keep dating in real life, and I don’t mind making it public."

With Yuk Jun-seo’s latest Instagram post further fueling dating rumors, fans are eagerly watching to see if this Single’s Inferno couple will transition into a real-life romance.