com outra pessoa

with someone else

→ com

phrase Uncommon #15,703

with someone else Pessoa is grammatically feminine, so outra is feminine too; the phrase can refer to a person of any gender.

PO: Ela foi ao cinema com outra pessoa.

EN: She went to the movies with someone else.

She mistook him for someone else.

Then I'll go with someone else.

— Amor à Flor da Pele (2000)

You’ll end up marrying someone else.

— Irmão Bajrangi (2015)

His kindness towards another person is unforgettable.

Go with someone else.

— Questão de Tempo (2013)

I can't imagine doing this with anyone else.

— Azul É A Cor Mais Quente (2013)

With someone else.

— O Tambor (1979)

I think you mistook me for someone else.

Everything is funny when it's happening to someone else.

I think he confused me with someone else.

— Questão de Tempo (2013)

You confused him with someone else.

— Andrei Rublev (1966)

She was talking to someone else.

Did you know that Mary was dating someone else?

You're confusing me with someone else.

But I think it was with someone else, not me.

— Moscou Não Acredita em Lágrimas (1980)