"Sweetheart" is most often rendered as "Chérie" (fem.) and "chéri" (masc.) in French.
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.
Cheri/e
Mon chéri.
amoureux
bien-aimé
cheri occupés.
Merci chérie
ma petit chou
Là où êtes vous amoureux
ce qu' une petit amie
sleppe wella swettarts