In recent months, K-entertainment has been hit by a wave of heartbreaking relationship news involving some of its biggest stars. One after another, high-profile celebrity couples have announced the end of their romances, leaving fans stunned.
From the so-called “number 4 curse” that appeared to catch both IU and Lee Jong Suk as well as Girls’ Generation’s Sooyoung and Jung Kyung Ho, to the unexpected end of a marriage that had lasted more than 15 years, several relationships came to an end this year. However, the breakup generating the most discussion has been ATEEZ member Yunho’s split from his longtime girlfriend, which was followed by a shocking online letter allegedly written by his ex in an attempt to pressure him into getting back together.
IU and Lee Jong Suk: A Four-Year Romance Comes to an End
On July 10, Korean media outlets reported that IU and Lee Jong Suk had decided to end their relationship after four years together. Their agencies confirmed that the two stars had recently broken up and would remain supportive colleagues moving forward. According to reports, their increasingly demanding schedules gradually drove them apart, making it difficult to maintain their relationship. The news quickly spread across social media, as the pair had long been regarded as one of K-entertainment’s most beloved, low-profile couples.
IU and Lee Jong Suk first met while hosting Inkigayo in 2012 but did not publicly confirm their relationship until late 2022 after Dispatch released photos of them vacationing together in Japan. Throughout their relationship, the two rarely displayed their romance publicly but consistently supported each other’s careers behind the scenes.
Sooyoung (Girls’ Generation) and Jung Kyung Ho: A 14-Year Love Story Without a Fairy-Tale Ending
If IU and Lee Jong Suk’s breakup surprised fans, the split between Sooyoung and Jung Kyung Ho left many even more heartbroken. After 14 years together, the longtime couple officially announced their separation in June.
According to an exclusive report from My Daily, their demanding careers ultimately led to the breakup. Jung Kyung Ho remained busy filming multiple acting projects, while Sooyoung frequently traveled between South Korea and Japan for work. As they spent less time together, the emotional distance between them reportedly grew, leading both to decide to end their romantic relationship and remain colleagues instead.
The couple began dating in 2012 and publicly confirmed their relationship in 2014. For years, they were considered one of the industry’s model couples, prompting many fans to hope they would eventually marry. Their separation therefore came as a major disappointment to longtime supporters.
ATEEZ’s Yunho: A Painful Split Followed by a Disturbing Controversy
Earlier this April, ATEEZ member Yunho reportedly ended his relationship with his non-celebrity girlfriend. According to reports, the idol personally informed his agency about the breakup and stated that the two had completely cut off contact afterward.
Sources claimed the pair had known each other since their school days, making the breakup especially difficult after spending so many years together.
Not long afterward, an account on X that many believed belonged to Yunho’s former girlfriend uploaded what was described as a farewell letter threatening self-harm in an apparent attempt to persuade the singer to reconcile with her. The post quickly sparked heated debate online.
While some criticized the woman for potentially damaging Yunho’s reputation, others expressed concern for her mental health. Many netizens argued that she appeared emotionally unstable and needed professional help, something they believed Yunho could not be expected to handle on his own.
Gaeko (Dynamic Duo) and Kim Sumi: A Model Marriage Ends After 15 Years
At the beginning of 2026, Dynamic Duo rapper Gaeko and his wife Kim Sumi shocked fans by announcing their divorce after 15 years of marriage. Despite ending their marriage, the former couple stated they would continue raising their two children together as supportive co-parents. For years, they had been regarded as one of Korea’s most stable celebrity couples, making the announcement especially surprising.
Gaeko debuted with Dynamic Duo in 2004. During the group’s peak years, Dynamic Duo became one of Korea’s best-selling hip-hop acts, while their song “AEAO” recently experienced a resurgence in popularity through TikTok.
Pdogg and Kim Ga Young: A Quiet Romance Ends Quietly
Music producer Pdogg, best known for producing many of BTS’s biggest hits, also confirmed his breakup with weather presenter Kim Ga Young earlier this year.
The couple went public with their relationship in 2024 but consistently kept their private lives away from the spotlight. As a result, news of their separation generated less public attention than many of the other celebrity breakups in 2026.
Pdogg is the acclaimed producer behind numerous BTS hits, including “Boy In Luv,” “Fire,” “Blood Sweat & Tears,” “Spring Day,” and “Fake Love.” Meanwhile, Kim Ga Young has worked as a weather presenter for nearly a decade while also building a successful television career through variety shows such as Kick A Goal, Apocalypse: Hondonui Jigubangwidae, and Life Blooms Again.
Sources: K14
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