There are times in our lives when we feel really lonely and the things that we are going through we don't want to share with other people. In a world filled with so many people and so many things happening it's almost crazy to think that someone can be alone, or feel complete emptiness.
I think every one has a moment in their lives, where they feel isolated or like no-one understands. It's usually a moment when you find yourself going through a big change in your life, when your life is changing direction.
Understanding the disconnect and the space that you are in will help you get through it. Everything passes, and so will the loneliness.