How to Catch a Cheating Lover

Some cheating isn't even considered cheating. Football games are won by trick plays and earn quarterbacks the title of a hero, along with multi-million dollar salaries. Other cheating is entertaining, like the magician's repertoire of card tricks, sleight of a hand, and beautiful women who disappear or survived being sawed in half. Military strategy often involves camouflage, which throughout history, has won wars, going back to the Trojan horse in ancient Greece.

Most cheating however is undesirable, whether it's gambler trying to beat the casino, the student who cheats on exams, the citizen who fudges numbers on a tax return, or the CEO who pays himself a multi-million dollar bonus while shareholder profits plummet. But perhaps, the most disappointing, and personally painful cheating, is that which occurs among lovers and spouses. An unwritten expectation of fidelity is the core of sexual relationships.