"¿Habla usted español también?"
If you mean "sweet" as in a flavor, "eso es dulce" or perhaps "Que dulce". If you mean something that is caring or emotional, perhaps "Eso es precioso/a", "que amable", "es mono/a", "es suave", or...
Muy caro
"Me too" in Spanish is 'Yo también" (Yoh Tom-be-en)
Los dulces.