Boquita is the diminutive form of boca (mouth), meaning "little mouth." Diminutives in Spanish often add a sense of endearment, tenderness, or cuteness.
In this song, the singer uses boquita when he says, "Rechazar esa boquita tan hermosa no se me da" (Rejecting that beautiful little mouth is not something I can do). It highlights his affection and attraction, making the word more intimate and captivating than just saying "mouth." It's a sweet and evocative term that adds a layer of romantic longing.
Claudio Alcaraz's "Nomas Te Miro" is a really relatable song about trying, and failing, to get over someone. He sings about how hard it is to forget someone when you see reminders of them everywhere, saying "es muy difícil fin de encuentro en todas partes" [it's very difficult to find an end everywhere].
He's clearly still hung up on this person, even admitting that he wants to give in to his feelings again, asking "qué es lo que hiciste que me entrara" [what did you do to get into me?]. It's a fun, honest look at how love can make you lose your pride, especially when he sings about how he can't reject their "boquita tan hermosa" [beautiful little mouth]. You can really feel the struggle in his voice!