You are quite wrong that the Bible condones rape in any situation.
What does the Bible say about rape?
http://www.gotquestions.org/Bible-rape.html
But one thing I have learned about atheists, is that they will not believe it even when the errors they promulgate about the Bible are shown to be false. They will continue to persist in believing and spreading the errors they hold to.
If a man rapes a single woman and is rewarded with her being given to him for life, this seems very much like “condone” to me. You want a woman and she won’t marry you? Rape her. Then she has to. It’s almost Islamic. And why? Because the same culture produced them both: the Middle East.