תרגום - פורטוגזית ברזילאית-לטינית - Sou todo teu, serei fiel até o último ...

Thank you, Lilly, for your silent bridge! I appreciate it a lot!

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Dear Alex!

I'll be faithful to you = tibi fidelis ero?

I'm not sure what would be the best translation for "until the last sight". Hmm, since "at first sight" would be "primo aspectu", so maybe "until the last sight" should be translated: "ad ultimum/extremum aspectum". What do you think, dear Alex?

Hello Aneta!

1) Yes, the most literal and correct translation is yours. I always make things more complicated than they are...

2) "the last sigh" ≠ "the last sight"

The original says "sigh" not "sight"

Haha! Yes! You're right! I just misread the English word...

So, "until the last sigh" --> usque ad ultimum suspirium?

My dictionary translates "fino all'ultimo sospiro" as ad ultimum/extremum spiritum and usque ad ultimum spiritum, but doesn't give any example.

All right, dear. I trust your dictionary. It seems to be possible, though, I need to confess, I didn't meet the expression before.
I told you I could learn from you too, my excelent translator!