Un-kept song

I do often wonder why that song was never kept.
Though it may have something to do with how I ruined our duet.
With highs and lows thrown here and there it is not hard to see,
That I obiviously can't keep up with my partner Tiffany.
It turned out so teribly that Tiffany ran off and wept.
But still I often wonder why that song was never kept.