The Test: Someone broke the agreed-upon monogamous terms of the relationship -- either emotionally or physically.
How To Pass It: The statistics about monogamy being as bleak as they are -- even if you're 100 percent faithful and 1,000 percent positive you or your partner would never stray, there are strange, unpredictable crevices that one can step into over the course of a committed, LTR. Cut "cheating" off at the pass by having an open and honest conversation about a) what you as a couple do or don't consider cheating (exchange of intimate emails or text messages? full-on intercourse?) b) decide which of these acts would or would not be a dealbreaker for the relationship and c) have an emergency plan in place like you might for a natural disaster.
This doesn't mean that dealing with infidelity will be any less devastating if it ever does strike your relationship, but at least you will have an emotional power generator and 12 bottles of water to survive as you figure out how to proceed.
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