You are like nothing that I ever knew - Tradução em português

Hi guys!

I was studying English, like always, actually, a song lyric, "Help Yourself", it's an Amy Winehouse song, and I was translating starting by the end, I know it's not usual. But I got two translations and now I need some help from you, to know what translate it is the correct.

"You are like nothing that I ever knew"

The translations:

1- "Você é como o nada que eu nunca conheci"
2- "Você é como o nada que eu já conhecia"

I already saw the translations on -letras terra- and there is the second option, however, I know, only know, that sometimes "ever" can become "nunca" but I don't know when and I already saw some wrong translations in this website...and I'm smelling a rat... (I hope you understand me and help with this doubt)

Thanks in advance.