Friends are one of the best things on the life but: What can we do to prevent troubles with them:
First we can try to listen to them and think about them before than us and we would take care of them as they do this with us... Best friends are a help when they are GOOD but we have to take care when some of them are just pretending be our friends... Here is an example of a good friendship:http://www.youtube.com/watch?v=G6hjukAMLyw