Personally I wouldn't even try for it. If Christianity isn't really your thing, then you honestly don't have a prayer. (Get it?)
My dad is a Minister and I spent most of my High School days a very religious person. Much has changed since then, but one thing still remains the same - My knowledge of how true religious people really are.
If this girl's entire family more or less forbids her to date, you have no chance whatsoever either. You would be basically asking her to go against her parents, which in turn goes against herself and her religion. You would be shunned by her family in the event you ever did "win her" away.
This idea has so much "wrong" written all over it, I really don't even know where to start. Other than saying - Don't do it.
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