Reading this site confirmed in me on what a loss it would be if I continue to date this man. My only consolation is that I hope that I meet another Persian man that is saved and filled with the Holy Ghost. This is just a general opinion on marriage between Muslims and Christians. No matter what religions are involved, if you feel strongly about your faith don't marry someone from another. And if his family is religious, that could influence him tremendously when you have kids.
Most people begin to care more about spirituality and religious roots as they age and have kids.
Stay respectful of each others belief and look for common ground, there is much. My husband has attended Christmas Eve services on a couple of occasions. He has taught our daughters how to pray namaz. I have done a lot of reading about Islam, including classes in college involving important Muslim writings. We should be informed on these things early on, as it gives some cultural background and insight.