"Curious" is a song by American singer-songwriter Hayley Kiyoko from her debut studio album Expectations (2018). It was released as the album's third single on January 11, 2018 by Empire/Atlantic Records. Kiyoko co-wrote "Curious" with Lisa Vitale, Brandon Colbein, Jakob Hazell and Svante Halldin, while Jack & Coke (Halldin and Hazell) produced the song. The dance-pop, R&B and synth-pop track details Kiyoko confronting an ex-girlfriend she believes is dating a man to mask her true feelings for Kiyoko. Its title adopts "curious", a term used within the LGBT community to express casual same-sex experimentation, as Kiyoko demands the truth about the authenticity of her love interest's new relationship.