Amanecer is a beautiful and versatile word that can be both a noun and a verb. As a noun, it means "dawn" or "sunrise", and as a verb, it means "to dawn" or more poetically, "to wake up in the morning".
In this deeply romantic song, Camilo sings "un amanecer bonito" (a beautiful dawn) and "pa' ver cómo amaneces" (to see how you dawn/wake up). He uses this word to describe the magical feeling of waking up next to someone you love for the first time, comparing it to the beauty of a new day beginning.
"Por Primera Vez" is a sweet, tender pop duet by Colombian singer Camilo and Evaluna Montaner that celebrates the bliss of waking up beside someone you love. The track opens with a funny little flash of vulnerability: Camilo sings that he wants to kiss his partner the second she wakes up, but worries she is looking for someone flawless while he is "tan de carne y hueso" ("so flesh and bone", meaning totally human and imperfect). You also get some casual spoken Spanish in the chorus setup with "pa' ver cómo amaneces" (short for para ver, meaning "to see how you wake up").
From there, the track turns into pure joy. The chorus revolves around the idea that finding the right person makes everything feel brand new, repeating "Por primera vez, yo volví a nacer contigo" ("For the first time, I was reborn with you") and "hoy duerme el cielo conmigo" ("today heaven sleeps with me"). They make a point that regular time does not matter anymore because yesterday flew by and tomorrow is already here, leaving only room for "cosas bonitas" ("pretty things") and the simple comfort that "mi vida es vida solo contigo" ("my life is only a life with you").