Goodbye

A friend is what I called you,
And there's nothing left to say.
But the friend I used to talk to has now gone away.
You have crossed the line of friendship,
You've reached a boundary I can not see.
To me you are a door with which I have no key.
So this is all a broken friendship,
So this is all at an end.
Goodbye my old companion, you WERE my bestest friend.