This is something that's very important to her, and it's difficult to be married to someone who doesn't share the same values. Unless you have some super amazing other dating prospect there isn't a huge reason to cut this relationship off now. I can't emphasize this strongly enough.
But I got to my breaking point, and after not hearing from him AT ALL for seven days at this point we had been dating and sleeping together for months. She doesn't want to marry you.