The reason stems from Rose sharing Bruno Mars' post on Instagram, to cheer and promote the new product to be released at the end of February by the American male artist.
Since the resounding success of the single "APT." released at the end of 2024, the Blackpink singer and Bruno Mars are considered a harmonious couple in the international music scene.
They often praise each other in interviews, become close friends in real life, and enthusiastically interact on social networks.
Therefore, when Bruno Mars entered the promotion phase of his new music product, Rose, as a friend, spoke out in support of her partner.

This is inherently a very normal interaction in the industry. However, this action was criticized by a part of netizens. They believe that Rose is "obsessed" with Bruno Mars, but "lacks interest in the members of the same group".
A viewer criticizing Rose wrote: "She is haunted in a strange way, really very strange! Everyone has collaborated with famous international singers, but Rose's way of clinging to him is crazy. I swear she will never forget that collaboration".
In a short time, attacking comments aimed at Rose appeared densely, with such intensity that even outsiders felt confused.

This wave of reactions surprised neutral audiences. Supporting a music partner who had successfully collaborated, why caused such a strong negative reaction?
Faced with that situation, a large number of fans quickly spoke out to defend Rose. They believe that artists also have their own social life, have relationships and partners that they cherish, and public support is not only an expression of friendship but also respect for the profession.
Fans also pointed out that Rose has never neglected to support fellow group members. Every time Jisoo, Jennie, Lisa release new songs, Rose still enthusiastically shares and cheers.
According to the media, this is not the first time a Kpop idol has been involved in an unprovoked controversy just because of social media activities. Under the stage lights, all their words and actions are exaggerated infinitely, to the point that very ordinary interactions can also be attributed to layers of complex meaning, far from the original intention.
The experience Rose encountered this time reflects the inherent contradiction in Kpop fandom culture: both wanting idols to reach far with top international collaborations, and it is difficult to accept them expressing their personal identity separately from the familiar "collective" framework.
Meanwhile, Rose is expected to attend the 2026 Grammy Awards ceremony with Bruno Mars, which will take place on February 1 in Los Angeles, USA.
The song "APT." by the two artists was nominated in 3 categories: Song of the Year, Record of the Year and Best Pop Duo/Group Performance.