I just finished reading a book series.  The name of the book is Inside Threat by Jason Elam.  In the book the main character is Christian, the girl that he loves is Muslim.  His battle is because of their faith they can't marry each other.  Why is that?  Is it because within those religions they aren't allowed to marry outside of them?  Any info would be helpful.

I know of one Muslim lady that we used to rent a house from.  There was a man who was not Muslim who wanted to marry her and he converted to Islam.  I don't know if he HAD to, or just wanted to.

I have heard of Muslim families disowning a family member if they convert to something other than Muslim.  I don't know how widespread that practice is.

Many Christian denominations are the same way as Lita says Muslims are.  Basically, both sides think they own the rights to salvation and if you don't choose the right one then you're damned.

The Quran to my knowledge specifically talks about not forcing anyone into conversion. Of course it does happen in real life, because of people and their flaws, etc. To my knowledge there is no religous backing to blocking religious intermarriage, but there most definitely be could be a cultural one.

Edit for clarity.

There are two kinds of marriage. civil which does not involve religion and then there is a religious marriage that involves the religion in the ceremony. If the two people are not of the same religion then a religious ceremony won't work.