Garçon doux in French means "sweet boy" in English. This is never used in French.
She called him "Georgie Boy" and "sweet heart".
un gentil garçon, un doux garçon
petit garçon or bébé garçon
Sweet heart is un petit ami / une petite amie in French. As a term of endearment, 'mon coeur' or 'chéri(e)' are frequently used.
I think you are sweet french
If he's a stupid immature boy, he'll act perverted and gross and probably prank call you. If he's sweet, he'll sweet talk you as in "you looked pretty today" or "you have the prettiest eyes"
The French translation of "she is sweet" is "elle est douce."
Sweet Little Jesus boy
sweet baby
The French name for sweet potato is Patate douce.
In Yiddish, you would say "zis yingl" to refer to a sweet boy.