Can you say I live with my daughter?
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
Yes, my girl can mean my girlfriend
I thought these might also work: "fiica mea" (my daughter); "prietena mea" (my girlfriend). Native speaker, pls correct if I'm wrong.
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"