Fake friends get everything from you including knowledge.
They speak nicely with you and talk bad about you behind your back. However they never show that they are fake friends and are very smart in acting as truly caring friends.It takes some time to understand who actually they are b cos they are sooooo smart.

Real friends are very rare to find and may be none exists. They will never take undue advantage of you and would be there for you whenever you want them.

Think twice b fore you select somebody as a true caring friend.