Sonreír means "to smile." While it might seem like a common word, its repeated emphasis in this song makes it particularly poignant and central to the theme of enduring love.
Neto Bernal sings about wanting to "hacerte sonreír" (make you smile) every day for a thousand years. This highlights the deep commitment and joy he finds in his partner, making it a beautiful and memorable word that encapsulates the song's romantic sentiment.
Neto Bernal's "Nunca Pensé" is such a sweet song about finding unexpected love after a lot of heartache. He sings, "Nunca pensé que tú serías la mujer que un día soñé" [I never thought you would be the woman I dreamed of one day], which really sets the tone. It's all about that moment when you realize the person you're with is everything you've ever wanted, even if you'd given up on love before.
He talks about how her gaze gives him security, making him want to be with her "todos los días sin pensar en un final" [every day without thinking of an end]. It's a powerful declaration of commitment, saying he's decided who he wants to love and will be with her "mil años junto a ti, y cada día hacerte sonreír" [a thousand years next to you, and make you smile every day]. He even says, "Ya vives dentro de mi corazón, mi momento perfecto es cuando hacemos el amor" [You already live inside my heart, my perfect moment is when we make love], which is a pretty direct way of expressing how deeply she's become a part of him.