There is a relevant thread about a Bible passage:
http://www.christianforums.com/t7672248/
... I have yet to ponder some more on that verse.
I have almost the same problem myself. We have been together for 4 years. She attends Church 1-2 times a week, but for other reasons than I do, and we don't go to the same Church. Many people have different reasons for being Christian than us, and many of those have a less developed faith.
(I did 2 tests on the internet, both summer '11 and summer '12, and both times I got the answer that the RCC and the Anabaptists are the closest to what I believe. See:
http://www.christianforums.com/t7663680-post61076898/#post61076898.) I think that some Gnostic teachings are Christian too, I'm discussing that in a thread right now:
Agnostic Contributor referenced in some logos material? - Logos Bible Software Forums. But I avoid Gnosticism in Bible versions:
http://www.christianforums.com/t7645280-post60345676/#post60345676.)
Your fiance
may have problems with how he views Your Christianity. I'm offended by what some people view it as, they see it just as a hobby, which it's not.
I'm pretty interested in Biblical things. I'm probably going to study both Biblical Greek and Anabaptism in college, but I don't want a salary from that later. (I'm going to study to be a college engineer - it's going to take a while.)
I don't look in Churches for people to discuss with, but I do attend 5 classes in Church. As You can see from a Visitor Message on my profile, someone is trying to find me a friend from the UK to discuss with.
I like reading books together.´
I don't know can I do something to change my situation. Change girlfriend? What keeps me from making such a decision is that I like caring for her and she is a good friend to talk to and intelligent. But most things I believe in she doesn't believe. She also often has a counter-reaction when I talk about Christianity - it's obvious that her reasons for going to Church are completely different from mine. Compared to me my girlfriend reads no Bible, reference litterature, commentaries, (Early) Church History and theology. (To find someone who studies Greek is not important though.)
When being a couple You should be able develop on aproximately the same level
My fiance and I have been together for 2 and a half years and engaged for 2 months. We a re planning a wedding for next September. I've tried to encourage him spiritually but he just won't take any interest. I believe he is a Christian but he's so totally unable to articulate his beliefs that we can't have any kind of spiritual conversation.