Chances are there has been someone in your life whom you called a friend -- only to realize they were anything but. It can be soul-sucking when someone in whom we've invested a great deal of time, energy, and -- more importantly, trust -- lets us down. But all it shows is that no matter how well we think we know someone -- no matter how strongly we believe we have a firm sense of their true character and motivations -- they can deceive us at any point in time. Here are three signs someone is only pretending to be your friend: 1. They talk behind your back. They're two-faced, saying good things about you when in your presence but doing the exact opposite when you're not around. This signals that they not only disvalue your trust, but also your loyalty. 2. They only seem to surface when they need you.  If you get a call or text from this individual, they need money, a cable jump, or some other favor. Being the good friend that you are, you're always happy ...