A Day In The Life

I go to school, sit through 4 classes and chill with my friends. but lately, I've felt that I'm drifting away from all of them. I've noticed that some of them are having problems, but they never come and talk to me about anything. I feel untrusted, unloved, and alone. they shut me out of their lives despite the fact that i'm always there for them if they need me, but no. They go to a bunch of other people and talk to them right in front of me, and when i ask them about it, they say something along the lines of  "it doesn't concern you". I'm at a loss and i truly don't know what to do.