Crush and IU Lock Eyes in Romantic Moment, Spark Curiosity About "seesaw"

Singer Crush and IU appear to be a couple in the music video teaser for their upcoming collaboration. Crush released the teaser for his new digital single, "seesaw," featuring IU, on his official social media channels on Oct. 19.

The clip shows the two joking around backstage. They move between dresses hanging on a clothing rack, exchanging playful gestures and smiles. In one scene, they look at each other and smile.

The teaser also offers a preview of the new song.

"seesaw" follows two people navigating the awkward stages of love as they try to make their relationship work. Crush took part in writing both the lyrics and music, with his soft vocals blending with IU's clear voice.

The single marks Crush's first new release in about one year and two months, following his EP "FANG" in Aug. 2025. It is also the first time Crush and IU have officially released a song together.

"seesaw" will be released on Oct. 21 at 6 p.m. KST on major music streaming platforms.