A couple years ago,
I made a promise
I thought I would keep,
I never knew how hard it would be
To break a promise,
Is like breaking someone's trust
That they have in you,
And to break someone's trust,
Is like ruining the whole friendship.
Trust me ruining a friendship is the last thing you want.

Trysta Due

http://www.poemhunter.com/poem/broken-promises-7/