mujer/esposa dulce
So sweet. = Tan dulce.
eres dulce
ricura
You can say "Primer grado es dulce" in Spanish. This phrase captures the idea that first grade is sweet or enjoyable.
You call your ex-wife in Spanish as 'ex-esposa'. Esposa means wife.
esposa
muy dulce
Ella es dulce.
dulces sueños
frijoles dulces.
There is not exact Spanish equivalent of this. You could say"Mi amorcito" or "Mi corazoncito"
te quiero (Spanish) -> I love you (English)