Neta is popular Mexican slang for "the truth" or "for real". It's a super common word you'll hear in conversations and in modern Regional Mexican music, but you won't typically find it in a textbook.
In the song, the singer says, "y neta que yo me siento mejor" (and for real, I feel better). He uses neta to add emphasis and sincerity, assuring his love interest that his feelings are genuine. Learning this word is a great way to make your Spanish sound more authentic and natural.
This song is a full-on love letter! The singer is completely head over heels for someone and he's not shy about it. He tells her, "No puedo parar en pensar / En tu carita angelical" (I can't stop thinking / About your angelic little face). He lists all the things he loves about her, from her smile and her eyes to her scent. It's a very direct and passionate declaration of love.
But it's not just about looks. He promises to be her everything, saying, "Yo quiero ser el hombre / Que te dé todo y nada te falte" (I want to be the man / Who gives you everything so you lack nothing). He imagines a future together, from traveling the world to simple moments like having coffee in the morning and watching movies in bed. He even promises to be her comfort, saying "Si lloras te doy mi hombro" (If you cry I'll give you my shoulder). It's a sweet and incredibly romantic song about wanting to build a life with the person you adore.