Friends ?

Why is it that people hurt each other and fight ? I still don't really know what people is thinking in their heads . After being patient and going through all the pain . Do we actually have to do this ? This is our last year of school and I don't even know if we could actually see each other again . Why not we just get along with each other ? Is it really that hard to let the past go?  What can you see from there? Why is it that people cannot forgive each other? 

Sometimes I don't tell people what's wrong because most of the time they're just being curious.
Not because they care . Sometimes we just have to think before doing something .
I've did mistakes before but could you even take chances for me to prove to you that I'm actually
a friend that cares about you ? I would take that second chance if I had one .