Inquieto translates to "restless" or "uneasy." It's a descriptive adjective that goes beyond simple emotions, hinting at a deeper state of discomfort or agitation.
In the song, Aitana sings, "Siempre duermo inquieto cuando no estás aquí" (I always sleep restlessly when you're not here). This word beautifully captures the profound impact of her loved one's absence, suggesting a physical and emotional unease that prevents her from finding peace, even in sleep.
Aitana opens on something small and specific: 'Qué bonita estás así, sin maquillaje' (How beautiful you are like that, without makeup). That's the register the whole song stays in, she's already sensed the ending before she says it out loud: 'Que se está terminando otra vez' (that it's ending again).
The back half of the song runs on a money metaphor instead of a feelings one. 'Se fue a la quiebra to' el amor que en ti yo invertí' (all the love I invested in you went bankrupt) turns a breakup into a bad investment, and she admits she misread the signs the same way: 'Confundí los red flags con rojo de San Valentín' (I confused the red flags with Valentine's red). None of that stops the hook from repeating the same six words at every turn, 'Pero duele un montón despedirme de ti' (but it hurts so much to say goodbye to you), which is the one line in the song that never gets an answer.