"Goodnight, my sweet heart!" is an English equivalent of the Italian phrase Buona notte mio dolce cuore!
Specifically, the feminine adjective buona is "good." The feminine noun notte means "night." The masculine possessive adjective mio means "my." The feminine/masculine adjective dolce means "sweet." The masculine noun cuore translates as "heart."
The pronunciation will be "BWO-na NOT-tey MEE-o DOL-tchey KWO-rey" in Italian.
"Good night, my sweet heart!" is a literal English equivalent of the Italian phrase Buona notte, mio dolce cuore! The wish refers to a heart that is sweet, not to the endearing sweetheart. The pronunciation will be "BWO-na NOT-te MEE-o DOL-tchey KWO-rey" in Pisan Italian.
Buona notte alla più bella ragazza del mio cuore! in Italian means "Good night to the most beautiful girl in my heart!" in English.
Cuore
"Silver heart" in English is cuore d'argento or, more poetically, cuore argenteo in Italian.
Scelto con il cuore in Italian means "chosen by the heart" in English.
Segui il tuo cuore in Italian means "Follow your heart" in English.
grande cuore
cuore blu
L'amica del mio cuore in Italian means "the (girl) friend of my heart" in English.
"Heart of the family" in English is cuore della famigliain Italian.
Il cuore di Maria
"Forever in your heart!" in English is Per sempre nel tuo cuore! in Italian.
Con un peso sul cuore.