Isn't it kind of ironic how it's two unmarried guys that seem to have the most to say about marriage?
I'll have to do some more research on this, but I definitely don't believe that GOD ignores marriages between non-believers.
If what you are saying were correct, Dave, then that would create some major questions about sin. Because, if marriage is the only approved relationship where sexual intercourse can exist, then is a married man guilty of fornication every time he has sex with his wife? And can a married unbeliever actually commit adultery?