i love you

This is the standard and most direct way to express romantic love in Portuguese. The mental image is a sincere, heartfelt declaration, usually reserved for partners, spouses, or deep romantic interests. While it is the direct equivalent of "I love you," it carries a significant emotional weight in Portuguese culture and is rarely used lightly. In casual contexts, speakers might shorten it to just "Amo você" or "Te amo," with the latter being the most common form in everyday speech.
In conversation
A romantic evening
Eu te amo tanto.
I love you so much.
Eu também te amo, meu amor.
I love you too, my love.
The pronoun 'te' is often placed before the verb in Brazilian Portuguese.
A sweet text message
Só queria dizer que eu amo você.
I just wanted to say that I love you.
Que fofo! Também te amo.
How cute! I love you too.
'Amo você' is slightly more emphatic than 'Te amo'.
Examples
Eu te amo.
I love you.
Eu te amo com todo o meu coração.
I love you with all my heart.
Não consigo imaginar minha vida sem você, eu te amo.
I can't imagine my life without you, I love you.