What Did I Do

I come in and sit down You pretend I'm not there You say you have no friends So what am I? I come in and sit down I pretend you're not there You get mad Why is that? I start to respond I try to talk You still seem mad What did I do? I can’t read minds You have to tell me What did I do? You talk to her all the time Her this and Her that What did I do? You should be my friend But instead you ignore me What did I do? What am I? What did I do? Why won't you tell me?