It's good to know that you have the strength to move on like this... a lot of people just sit in a state of bitterness and let it eat them from the inside out. Forgiveness is a wonderful thing, you know, not only to recieve but also to be able to give. Not always easy, especially when you have the power to so easily hurt someone.
I think it was Spiderman's uncle Ben who said "With great power comes great responsibility." This applies to love as well... you have a responsibility to be sensitive, because you have the power to utterly destroy someone. So, just keep clean and you'll be fine.
The poem itself... I like it, the way it's organized. It shows your story very nicely without being exclusively narrative. The sweetness and the pain are kept in perfect harmony.
You've done well here, I enjoyed reading. And I know this poem is pretty personal, so thanks for letting us read it.
"Faith" means the will to avoid knowing what is true.
~ Friedrich Wilhelm Nietzsche