I don’t know why you think that religious and non-religious people can’t be together. That very attitude tells me that I would never want to go on a date with you. My wife and I have been in such a marriage for 15 years, we have two children, and it works just fine. In my opinion, the problem is the fanatics; they are the cancer of this world, and when I see that someone is a fanatic, it tells me to run away from them.
Every relationship is a compromise. Family, friendship, romantic… Otherwise, you’re just a psychopath.