I am the lyricist for a song that is in English but contains a few Italian phrases. I would like to ask about all those phrases, but for now I will start with just one. May I use the phrase "Mia dolce" to mean "my sweet one, my dear, etc."? Or does "dolce" exist only as an adjective and not as an implied noun?
If you suggest an alternative please note that the rhythm of the words is crucial. The music is on three beats, the first strong and the other two not as strong (i.e., the song is in 3/4 time and the phrase is one measure of three quarter notes).