Firstly, this is adorable. Secondly, how well can you cook?
There are classically French dishes that you could prepare or buy store bought from a market (Lofino's, if you are familiar with it). Also, what you decide to serve depends heavily on the mood you want to create and the resources -- mostly time and effort -- available.
If you'e short on time, money or cooking skills, you could perhaps purchase escargot that's likely to already have a really delicious garlic butter and serve it with a sliced baguette; make this your appetizer. Again, depending on whether you want to seriously impress your date, or charm her with the sweetness of the gesture, you could simple serve a croque-monsieur, which is essentially a ham-sandwich, for the main course. For desert, finish with a store bought crême-brûlés.
Of course, this is not French way of dining, but I think the average francophile will understand the thought behind these basic ideas.
Typically, wine is served with meals, but again, what I have suggested is a very informal attemp to hint at French culture, so I wouldn't think serving wine in this occasion would be essential.
----edit:
Well, I'm posting this during the weekend, so if your date hasn't already happened, I am sure it's about to soon. Sorry for not getting the chance to post this earlier. I hope things worked (or work) out well in the end.