Literally, it would be "corazón dulce", but that is not commonly said. Just use "corazón", or another word like "cariña" or "cielo".
Te extraño. or Echo de menos a ti.
sweetheart
if you are meaning the Genreic, hey babe / sweetheart as they have no literal translation for that the closest you will come to it is Cariño
SWEETHEART
Lo siento mi corazon people dont say sweet heart here. So just say my heart
The Latin word for sweetheart is puella. The word sweetheart in Spanish is novio, in Italian it is Tesoro, and in French it is amoureux.
To say sweetheart in Russian you say dorogaya. To say I love you in Russian you would say, Ya lyublyu tebya.
In Russian, "Любимая" is how to say/spell sweetheart.
There are a variety of words used to say sweetheart. These include кохана (kohana) and мила (myla).
The Romanian language equivalents for sweetheart is dragă, iubito.
The Romanian language equivalents for sweetheart is dragă, iubito.
Spanish for my love, my darling, my sweetheart.