My friend (let's call him "Don") has become a completely different person since hooking up with his girlfriend of 6 months (let's call her "Lisa"). I've known the guy since high school, and let's just say the humility that once set him apart from everyone else has fallen by the wayside. Long story short, he got a good job, bought a new car, and started kissing nearly every girl that struck his fancy. Now that he's with Lisa, he has souped up his car and prattles on and on about going to the gym and bulking up. Once unpretentious and hardly concerned with looks, popularity, and material things, the new Don gives fresh meaning to "flashy" and "cocky." There's nothing wrong with someone's self-confidence getting a boost. After all, we tend to feel really good about ourselves whenever we're making more money and getting increased attention from the opposite sex. But you can tell when a person is trying a bit too ...