The song "Only One" by ELHAE is about a complicated relationship that has its ups and downs. The lyrics depict a situation where the protagonist hasn't been in touch with their love interest for a while, but the love interest still contacts them. They both are searching for a deeper and more genuine love but struggle to find it. The protagonist acknowledges that they are only looking for a good time, not a long-term commitment. They've noticed that their love interest has become interested again after a long time of disinterest, but they want them to know that they are not the only one they are interested in. The protagonist further expresses their frustration by blocking the love interest's number and ignoring their calls because they feel that the relationship is becoming too intense. They try to distance themselves, but they admit that they still crave their company when they feel lonely. Throughout the song, the protagonist questions the love interest's actions, feeling disrespected and hurt. They suggest that they are ready to move on and find someone else who will treat them better. They don't want to make it seem like the love they once had is disposable, but they believe it's necessary to explore other options. Overall, "Only One" explores the complexities of a relationship where one party is unsure of their feelings and seeks to maintain their independence while still longing for love and companionship.