Im' so sorry i no longer make you smile.
i'm so sorry that i no longer make you happy.
i'm so sorry i no longer am what you want.
i'm so sorry that all i had to give was simply not enough.
i'm so sorry that it all has to end like this.
i'm so sorry you really want this.
i'm so sorry that you'll be much happier with me gone.

so this is goodbye.

this is goodbye.