"I Do" is a song by South Korean girl group (G)I-dle. It was released on July 14, 2023, through Cube and 88rising, as the group's first original English single from their first English-language EP Heat. It was written by its producers Rogét Chahayed and Imad Royal with Blaise Railey and Drew Love. Musically, it is a pop song that utilizes 1980s synth pop sound, while its lyrics revolve around a story about a lost love and the bitterness that comes with it.
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