Why I Write (revision)

This is much better. I would want you to make some of it more specific eg. torturing my heart is rather general. Can you specify the torture - twisting, rending, wrenching, piercing, crushing, scarifying, slicing...

Grammer - 
leaving you and I free to live
should be
leaving you and ne free to live

(The test is if the grammer is right when you remove the other person. 'Leaving I free to live' is incorrect. You would say 'Leaving me free to live'...)