Translation: algo dulce
te quiero (Spanish) -> I love you (English)
So sweet. = Tan dulce.
eres dulce
ricura
dulces sueños
Ella es dulce.
muy dulce
frijoles dulces.
There is not exact Spanish equivalent of this. You could say"Mi amorcito" or "Mi corazoncito"
You can start by learning proper grammar:"What is something sweet to say to your boyfriend when he asks why do you like me?"
hola muchacha dulce
mujer/esposa dulce