Replaced.

Friendship is forever, but it seems like our forever is coming to an end. Though you cannot tell, I'm utterly crushed on the inside.
You on the other hand, seem oh so intact on the inside.
I put on a fake smile in front of you because,
I don't want you to know how I truly feel about the situation at hand.
But, I've come to see that it only deepens the hurt inside my chest. You're getting your old best friend back,
Therefore me being your best friend now,
Will eventually go away and you'll replace me with her.
I'd I'll just be nothing to you.