Tell me

Why do you care when I'm not with you, but ignore me when I'm there?
Why is it the biggest thing in the world, but then other times you don't care?

Why do I feel I have to be there, but when I am I get ignored?
Why is it when I go somewhere else, I'm happy, your not, you look bored?

Why do you have to give me that look every time I leave?
But why, if you care so much, do you ignore me, and then you grieve?