In this context, girlfriend is a synonym for lover, and implies a relationship outside marriage. Therefore, the Italian word that you would use is amante.
It is worth noting that, when a man is not married, the term girlfriend is usually translated as fidanzata or ragazza.
"Wife" in English is moglie in Italian.
Moglie
"My new wife" in English is la mia nuova moglie in Italian.
Italian
Yes he is.Lorraine by Italian descent, his father Aldo Platini and his wife were Italian cooker.
Ilary Blasi, an Italian showgirl.
signora
Quella è mia moglie! is an Italian equivalent of the English phrase "That is my wife!" The declaration represents a rare match-up of English and Italian phrase and sentence structure. The pronunciation will be "KWEL-la eh MEE-a MO-lyey" in Pisan Italian.
She is Italian
She's Italian.
Essere mia moglie
sofia vari, an Italian sculptor.