Sister

Because, she is everything. 

She is all the things I am not

And all the things I wish I could be

Everywhere she is full

Is a place I feel so empty. 

It's a hard feeling to describe

When you look at your other half

You see the things you could be

You hear yourself in her laugh

It's a fine line between love and jealousy

When she's all you could ever need

But part of you stops to wonder

If that was who you were meant to be.