Some people don't deserve all the attention we give them. They take it for granted and they could even get tired of us. If we stopped caring, things would be easier for us and for them. Why waste time on someone who doesn't appreciate friendship? They can be on their own from now on, at some point they are going to need a true friend and they will find themselves alone. People who don't understand friendship are more likely to have no true friends at all, simply because they let go the real ones and stayed with those who are fun to share with for a while.