If she says she can’t go when you ask her out for a date, it’s probably true. An Italian girl always wants to know how much you are willing to work for her. American girls pay attention to how they dress, but guys… They’re often deemed as looking acceptable once they meet the minimum standards.
Naturally, I’m generalizing, but American women seem more upfront, assertive and opportunistic than their British counterparts.
Nor did I know about this first date, second date and third date business.
In France, it’s very common for a girl to go out to dinner with a male friend.
Overall, Americans are very very cautious on the dating scene.
It can sometimes take a long time for a romantic relationship to develop into an official boyfriend/girlfriend relationship. There are all kinds of different stages of relationships that foreigners need to be aware of, and some of them will always seem kind of ridiculous (like the open-relationship stuff, I am just never able to get it).