I've always hated the term "affair-proof." First, it promises a false sense of security. But even worse? It places the blame for the affair on the betrayed, implying that you were cheated on because you somehow failed to affair-proof your relationship. Yet even though you can't affair-proof, there ARE things that you can do to reduce the chances of infidelity. Things that I only realized after my first husband strayed. Here's what I learned...