hi Nicole...
To answer ur question first, the reason is simply because the relationship is not right as it is unequally yoked. This is stated very clearly in the bible. The man is meant to be the head of the house and if he is a non-christian, there'll bound to be a day where the wife (who is a christian) to fall away from God, which is definitely not what God has intended. Unless, the woman is strong in her faith, but it is very common for the woman to backslide especially if the man is not open to Christianity at all. There will also be a lot of unhappiness because of different thoughts/views/committment to God, etc... So.. since it's not intended by God for an unequally yoked relationship, I'll say that no church (as far as i know) will solemnize that.
Great to know that your fiance has already accepted Christ by saying the Sinner's Prayer. That is the most critical point as he's willing to die to his self and be reborn again.. although the reason of him doing it in the beginning was not exactly right, i would say it's still a 1st step.. and as he grow to experience God's goodness, God will touch him in His ways.. however, most importantly, u have to be faithful. No matter what happened at Church before, altho' i don't know what it is, but put it behind u and move forward... backsliding is quite common in a Christian's life.. it's how u learn and go back to God even more faithful than before.. GOd has a purpose for everything He does.. It may not be something that seems will benefit u in the situation, but u'll understand His Purpose in future.. Prayer works wonders.. so i'll encourage for u to go back to God/rededicate urself first and slowly bring ur fiance back to Him..
My fiance is extremely stubborn BUT i'm amazed how open he is in receiving the messages, but i guess he still needs time before receiving Christ, which is something i'm praying hard about.. He has seen God's goodness and guidance in our wedding plans.. so I know and I do trust God that He'll work in His Time, not anyone else.
When you say u really want a church wedding, what do u really mean? (This was the question 1 of my friends asked me when i shared with her on my initial problem.) A church wedding would be quite meaningless if it's not Blessed by God/Right in God's Eyes. The reason for having 1 should not be because it's really nice and cos u really desire for it... but more of bcos the couple wants God to be the center of their HOly Matrimony and this can only happen if it's right in God's eyes...
Really sorry if this sounds really harsh k.. i learnt alot during this 1 year of wedding preparations.. my initial plan never included a Church Wedding, but.. really Thank God for His goodness...and i find that ur situation is kinda similar to mine.. so i'd really wanna share what I've learnt with u... Moreover, i think it's quite amazing how i chance upon this thread, cos i'm not one that spends time checking out all threads except the one with my Bridal Studio, but happen to just surf around last nite suddenly..
Maybe this is a little message God wants me to send to u
Really hope that my reply would be helpful for u.. do think through k..
I'm happy to clarify if needed..
Enjoy ur Preparations!
~ Ling..