Very interesting. At first I thought this would be a cheezy love poem like all the rest but there was a twist at the end that made it unique. You rhyming was really good in this I didn't seem forced at all.

and that old world i knew has been left behind.
a world where i learned to laugh, and my heart grew
^ Just make sure you capitalize the "I" making sure you poem is grammatically and properly sound will give your poem a clean feel.

Great job!
5/5