A lot of people don't know how to appreciate true friendship until they have backstabbers as friends. Backstabbers pretend to be your best friend, but they act otherwise in your back. They are very hard to spot because most of them are good at it. However, there are some ways to know if you're suspecting this trait in your friends.
A backstabber will always seek every opportunity to disgrace you. They are very cunning in that they know how to make it look as though they are just joking. A lot of people engage in this activity because they are envious of their friend's success or achievement.
Most of them come to you only when they want you for something; they're hard to find when you are in need of them. Most of them like it when you talk more about your secrets things, but they hardly reveal theirs to you. At times, a backstabber can be easily spotted because everything about them will keep telling you that they are up to something.
Some people do not know that their friends are backstabbing them because their friends are trying to put up a front when they are together. You will usually know if they are backstabbing you based on their private chats that you may be able to access. At times, another friend of yours will tell you the truth.
The more that you become observant, the more that you will realize that the people that you have assumed to be your friends are not who they try to pretend to be. You may begin to catch a secret smile between your “friends” whenever you say something. You may even catch them talking about you negatively. People who are your true friends will never backstab you.