So far it might seem like a no-brainer; if you trust someone, give them your passwords and let them into all aspects of your private life. The issue is, that as many of us know firsthand, even the best relationships sometimes come to an end. People break up, couples grow apart, sometimes you might be betrayed, or sometimes you might do the betraying, but bottom line: sometimes your plan for forever falls through. Then what? All of a sudden your complete trust backfires and you end up not only heartbroken, but also scrambling to protect your assets and your future.