Your question is with regards to the doctrine of the church in
the area of marrying non-Christian.
1. Some Christians subscribe to the belief that this means that you
and your gf is "unequally yoked"
2. Most churches will NOT conduct the wedding if the gf is NOT
willing to convert to Christianity.
3. You need to ask yourself your personal stand with regards to
point 1.
4. If you feel strongly that being "unequally yoked" is a critical
teaching, then it will lead to point 2 because you will want a
church wedding. If....
5 You don't feel that being "unequally yoked" is important than you
may not need the church wedding - therefore points 1 and 2, above,
does not matter.
Up to this point, it's easy - everything hinges on how YOU feel as
a Christian. I will not give you my opinion on the "unequally
yoked" issue. It's your personal conviction.
After that, things may not be so clear cut. Meaning, what do you do
if you want to worship God on sabbath (note that worshipping God is
not an option, really). Will your wife follow you, will it cause a
certain level of dissonance in the family, will it eventually lead
you AWAY from God? This are just some of the more obvious questions
that needed answering.
On the flip side, I have seen non-Christian spouses coming to
Christ because of the faith of the Christian spouse.