"Eu locuiesc cu fata mea."

Translation: I live with my girl.

[bluchill]

Can you say I live with my daughter?

[potestasity]

Yes.

[KelseyW11]

Could this also refer to a girl who is not your daughter? In English, this would be an archaic way to say that you live with your girlfriend

[Lng52-._]

I thought these might also work: "fiica mea" (my daughter); "prietena mea" (my girlfriend). Native speaker, pls correct if I'm wrong.

[crbratu]

For a Romanian "eu locuiesc cu fata mea" means "with my daughter" although "daughter" translates to "fiică".
If you mean "girlfriend" you should use "prietena mea" or "iubita mea"