Any native Spanish speakers or people raised in Bilingual households?
 

Help me settle a debate, please:

A guy said "Hola Amorcito bonito" to a GIRL

This is wrong, yeah?

I lived in ecuador for a time and had 3 electricians working under me who spoke no english, so I knew he was wrong and yet both the man (un gringo) and the woman he was talking to (una gringa) both argued with me that I was wrong. During the course of this exchange he told her "(el) no entendio español"

Then they went and defended that blunder too! Thing is, the guy I don't much care for, but I was forced to tell the girl that his (the man's) spanish sucks, his conjugation is shit and her defense of his horrible, half-assed pig spanish is leading me to believe that her claim of being fluent is suspect.

It is actually ok, sorry.

So for some reason, the rule about words ending with -o being masculine doesn't apply here? That was their argument, that it was an exception to rule.

It seems to me that it should have been "amorcita bonita" if anything, but to me either way sounds clumsy.

Well,the rule about words ending with o being masculine does apply here, amorcito (little love) is masculine and therefore the adjective that goes with it is masculine too. I am not sure what the grammar rule is, but that´s the way it is, spanish is my first language.

From everything that I've been taught about Spanish "amorcito bonito" to a female is in all essence wrong grammatically.

But I am far from a professional in this matter.