A telltale sign someone isn't satisfied in their relationship is when they muse whether there's someone better out there for them. Perhaps they've been with the same person for many years and have seriously questioned whether they've missed out. One thing people have to realize is that, as with everything else in life, decisions involve tradeoffs. The moment you decide to enter into a monogamous relationship with someone, you each forego sleeping with and dating other people. If someone isn't ready to make that serious of a commitment, they should clearly articulate to others that they're not interested in anything serious. However, in some cases, people are happy to be in a serious relationship and genuinely care about their partner. But the fact that things have fallen into something of a rut -- maybe they've become complacent, maybe the intimacy has ground to a halt -- has led them to wonder whether things could be more exciting with someone else. Unless ...

Ever wonder why losing something seems so much more potent than gaining something? According to a concept known as loss aversion, our fear of loss is greater than our desire to gain. In other words, we prefer not to lose $10 than to find $10. Some studies have suggested that losses are psychologically twice as powerful as gains. It's no wonder, then, that consumers are so easily swayed by ads that include verbiage suggesting that time is of the essence, like "while supplies last" and "this offer ends soon." Even if we might not want or need a product, we take advantage of the offer -- just so that we don't miss out. The person who said, "You don't know what you have until it's gone" was onto something. When we lose something, we lament the absence of something that may never come back. In many cases, they can be things that hold some sentimental value, like an old shirt or Teddy bear. Gaining something -- say, buying a 201...