BLACKPINK’s Jisoo and Seo Kang Jun have ignited dating rumors online, following fervent fan observations of several moments believed to hint at a connection between the two prominent stars.
Both Jisoo and Seo Kang Jun were previously cast in the popular K-drama Boyfriend on Demand. In the series, Seo Kang Joon portrayed one of the boyfriends.
A post hypothesizing a relationship between the two stars has recently gone viral, accumulating over a million views on X, formerly Twitter. The original poster highlighted what they interpreted as matching Instagram photos, similar rings being worn, and Seo Kang Jun’s attendance at a BLACKPINK concert as potential indicators of a romantic link.
“Jisoo and Kang Joon are acting really suspicious,” the poster commented, expressing curiosity about Jisoo’s potential boyfriend.
#jisoo #kangjoon Okay, now that Lisa’s boyfriend has been revealed, I’m starting to wonder who Jisoo’s boyfriend that no one has noticed all this time is. Lol, literally no one has noticed him. Jisoo and Kangjoon are acting really suspicious🧐 pic.twitter.com/2feWlpLm3C
— G (@yan_gulsum55102) September 21, 2026
The post also claimed that Seo Kang Joon, who reportedly rarely wears rings, was seen wearing one on his ring finger that looked very similar to Jisoo’s.
Kangjoon never wears rings. I learned this from one of his fans, but he was wearing a ring on his ring finger that looked the same as Jisoo’s.
— G (@yan_gulsum55102) September 21, 2026
Fans also cited his presence at a BLACKPINK concert as another significant point of contention. According to the initial post, Seo Kang Jun had seldom attended the movie premieres or concerts of his colleagues in the past, making his attendance at Jisoo’s concert particularly noteworthy to fans.
By the way, he had never gone to any of his colleagues’ movie premieres or concerts before. He hates leaving the house and sweating, but he came to the concert to support Jisoo on one of the hottest days of the year🤪 pic.twitter.com/y0gEBDKJbk
— G (@yan_gulsum55102) September 22, 2026
The viral post generated reactions from fans, with some readily joining the speculation and even expressing their desire to “ship” the two actors together.
“Wait… if I remember correctly, he isn’t someone who goes to concerts, but he did for Jisoo,” one fan remarked.
By the way, he had never gone to any of his colleagues’ movie premieres or concerts before. He hates leaving the house and sweating, but he came to the concert to support Jisoo on one of the hottest days of the year🤪 pic.twitter.com/y0gEBDKJbk
— G (@yan_gulsum55102) September 22, 2026
Another fan humorously contemplated the possibility of the rumored couple transitioning from on-screen romance to a real-life relationship, writing, “The possibility of this ship becoming real and not only in the K-Drama.”
the possibility this ship becoming real and not only in kdrama 🤩 https://t.co/oQNheVQofD
— asayaa (@asayaaverse) September 22, 2026
Neither Jisoo nor Seo Kang Jun has officially confirmed any romantic involvement. The dating rumors currently persist as unverified speculation circulating among fans on the internet.
>> ‘Boyfriend on Demand’ Review: Did Jisoo Overcome Her ‘Terrible Acting?’
