I agree with everyone here, I believe you should move on. Do not rely on your feelings but rely on the word of God (look at Proverbs 3:5-6) God's answer to being with nonbelievers is laid out in his Word:"Do not be yoked together with unbelievers. For what do righteousness and wickedness have in common? Or what fellowship can light have with darkness?"-2 Corinthians 6:14
I believe God gave us this command for our own protection. Yes, it will be very difficult to move forward but think about all the hardships and difficulties that WILL come your way if you end up marrying the guy (I mean, you're facing challenges now but imagine how tough it will be in marriage and with children in the picture. There are a few people in my church who are married to unbelievers and it is one of the most toughest, emotionally and spiritually exhausting things they are dealing with).
Think about what God says about unbelievers and their unbelief: in the book of Psalms (specifically 14 and 53) they are called "fools" for denying his existence. You mentioned that your bf hates your love for Christ and that you believe he may think you're stupid for believing but isn't that enough for you to want to pack your bags and run for the hills? The Bible says that the message of the cross is foolishness to those who don't believe in what Christ did for us on Calvary but we as believers know it is power (1Cor 1:18). How can an atheist share and delight in this truth with you? They can't. It's impossible. Wouldn't it be much easier and less painful to wait for a man who loves and obeys God, who understands what it means to love you like Christ loved the church? (not saying things will be absolutely perfect and without issues with a Christian but you get what I mean, yes?)
I hope I don't sound too harsh here I'm just really passionate about this subject and it pains me when I see or hear Christians trying to make such relationships work because it rarely ever does and there is that danger of compromising your beliefs. I will definitely be praying about your situation and I hope God will reveal his truth to you and give you the strength to obey his command. Keep your head up!
Check out these links that deal with this subject:
Biblical manhood and womanhood (what a man and woman of God should look like): http://www.desiringgod.org/resource-library/topic-index/biblical-manhood-womanhood
The Marks of Manhood: http://www.boundless.org/adulthood/2009/the-marks-of-manhood
---------- Post added at 10:34 PM ---------- Previous post was at 10:33 PM ----------
yikes what happened to my post? lol *sigh* time to edit -___-