I sing this song to myself sometimes when I'm doing something or chilling out alone. There are many different stanzas, but just for writing it out this works.

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This is my sad song
Slow little sad song
This is the song that I sing
To myself.

This is your sad song
The only sad song
That I'll sing
Just, for you.

Heartlessly sad song!
Flowing outside me!
Running inside me!
Looping and sliding!
Bursting from within me...

I---never dreamed, we lose it.
I'd never dreamed it'd be lost.
I surly believed you.
I believed me.
I never thought for once that we'd
grow apart.

All those days I loved you.
Far away--without you.
I can't say for how long I've prayed that
Somehow it'd all--would go away!

But this is is my sad song.
Slow little sad song.
This is the song I wrote for you.
Not a happy ending song.
Not a never ending song.

Some things must end like us too.