Neo,
No, you don't need to learn French to be able to speak Vietnamese. French language, as you can see share some familiarization with the English language because of the Latin back ground. For example, in English, we say student, for French, it is etudiant with an accent mark on top of the E syllable.
The Vietnamese language is a sub-child of the French language system, but with its own pronounciations and meaning, thus it is vastly more complicated.
As far as culture go, Vietnamese do stick to themselves in many relationship situation. However, that doesn't mean that they aren't willing to be in a relationship with someone else who is different from themselves. With Vietnamese ladies, you need to be nice, caring, and definitely working slow. Once you have her, you will have one hell of a partner, trust me. When you talk to her, try to concerntrate on family, school and business subject first, after that then you can go into the more personal stuff
When you see her, say: chao em, em co khoe khong. That is the equivalent of: Hi sweetie, how are you doing? Or Bonjour cherie, comment ca va? in French.
Hope this help, if you have any other questions, I am here.
Take care,
De
)
), we haven't even gone out on our first date yet! 
But it will be a while before i use some of these lines... 
