Friendship

Friendship? What is the true meaning of friendship? You start the school year with your group of friends, that you think will never get broken up, but near the end of the school year you guys aren't speaking to each other. Aren't friends suppose to be there for you through thick and thin? Or are we the ones that distance our self from our friends? I believe we are at fault in both ways. For ex sample yesterday I had the longest conversation with a really close friend of mine since fourth grade. We haven't talk like that in a while, mostly my fault because I kind of distanced myself from her because of all the drama. We talk about so many things, but what really got my attention is how I noticed that another friend of mine is going through so much. I feel like I can't help my friend, because I wasn't there for her the last few times. In general what is friendship and are we at fault for the many lost of friendship we have?