Understanding subject change in「馬鹿みたい子供なのね」


I'm looking to start learning casual speech through different songs I like and
using translated lyrics to decipher the meaning. The first phrase of the song
馬鹿みたい is giving me some confusion. In 馬鹿みたい子供なのね how do we know we've gone
from talking about the speaker **馬鹿みたい** to about a "you" in **子供なのね**?




They are two sentences.

> ばかみたい You are a fool/That's ridiculous.
>
> 子供なのね You are a baby, aren't you?

Basically you need to be able to guess the subject correctly here.

* * *

Just my impression, but learning exclusively from song lyrics wouldn't be a
good way to learn. They are composed often in the way you need to guess a lot,
due to the constraints posed by the tune.

