True friendships are relationships that can be hard to achieve. Anyone can have a friend, but many people can be your friend for different reasons. That doesn't necessary mean that you should suspect all your friends for being 'fake', that's not really the point. But a lot of people have reasons to befriend you, such as you having something they need and can't find anywhere else, but not everyone may even realize it. That's why you must choose wisely what kind of people you keep around you.