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Really depends where in France. The french will only be nice to you if you are nice to them.
Now, the germans will definitely say something about you, they are more direct so they will say whatever is on their mind.
Australian manners
Well, I'm a German Australian and while it's true that both Australians and Germans are typically well known for a forthright attitude, it isn't true that we are rude. Manners and expectations are different in every country. Germans have a very intricate social system of etiquette and although there are always exceptions, most people in my circle of friends, family and acquaintances in Germany (and for that matter in Australia - although to be honest, these are mostly Germanic) would never sit down before a guest, nor order without consulting each other, and never begin eating before wishing the others "Guten Appetit!" To do less is to behave quite poorly and to fail to take the advice is to be obtusely ignorant and arrogant. Again, expectations are different from country to country and from community to community. I would walk away if you sat before me after inviting me out, and ate without waiting or without wishing me a good appetite. Also, it is a rather lopsided and edited version of events that we read here, clearly, and before we take as gospel that word of a man who doesn't respect his date, let's take a step back and consider the possibility that there is more to this than reported. It surprised me to read so many responses that suggest you'd all be happy to date a man who would not even show you simple courtesies! But then I have just re-read your responses and the fact that so many wrote such vile suggestions as to how to respond when one feels slighted suggests to me the reasons.
I suggested that he should not date foreigners, especially those that raise the trashiness level and bicker over something so small. That would be the best advice. Far worse to do as the foreigner did, freeload, and not offer to pay for dinner.

You'd better warn him beforehand so he is informed and given a chance to escape.