I agree with Bruce Sheyla but if you mean a sweet way to "call" your partner I think there is a lot of ways some of them can be: Sweetie, Babe, baby, My love, my boo, dear or if you have some nicknames between you guys but at the end I think that either way you call each other as long as the voice is coming out of his mouth calling you, it's going to be special and perfect. Have a good one and I hope I helped :)

You can also say: honey and sweetheart

well it's a nice question you can say a lot of word to your partner depending upon the situation. e.g 1) sweetheart 2) honey 3) My man ( in a romantic accent) 4) strawberry etc rest of all depends on your way of saying that

Sheyla: What an unusual question! I think it is not something specific; but rather the way something is said. For example, a kind word, whispered into your beloved's ear would be a very "sweet" thing. .