Nicely done.

Sad and tormenting piece. The flow was good, though I suggest you get rid of the "with's" in this bit:

For he admitted he fell in love...
**with you; your smile; your heart.**
You never expected this sudden change;
never thought of that crazy part.

It just makes it flow a little nicer.

Tragic, real and containing a great warning at the end. The heart is a frail possession that needs to be cared for.