Marriages are crumbling because one spouse cheated while one didn’t (somewhere between 13-41 percent, conservatively). While your married friends go to church and raise moral children, one of them is cheating, while one of them is not. Maybe this is not your friend’s story. Maybe it’s yours. So the concept of “affair-proofing” your marriage really ticks you off. Just another infuriating Christian cliché. Well, you’re in luck. This is not advice about affair-proofing. It’s kind of the opposite.