Here's one I wrote back in 2002 after a hard breakup with a girl. It was the last poem I ever wrote.

Title: Realization

No more discontent
Nor anguish and despair

Only the realization
Of a love left unshared

She never felt remorse
Not a moment of regret

Never shed a tear
For love she never meant

Still she led me
And blindly I believed

That perhaps one day
New love would be conceived

But finally truth is shown
And my heart becomes anew

For never will she get
The love she once knew