英语翻译Have you ever loved someone so much you'd give an arm fo

英语翻译
Have you ever loved someone so much you'd give an arm for?
Not the expression,no,literally give an arm for?
When they know they are your heart
And you know you are their armour
And you will destroy anyone who will try to harm her
But what happens when karma turns right around and bites you
And everything you stand for turns on you to spite you
What happens when you become the main source of her pain.
And when I'm gone,just carry on don't mourn
rejoice every time you hear the sound of my voice
Just know that I'm lookin' down on you smiling
And I didn't feel a thing so baby don't feel no pain,just smile back.