I don't even know what to write... mishmash

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're your heart
And you know you were their armour
They take your heart and steal your life
And it's as though you feel you've died
Cause you've been killed inside
And everything seems so bleak and hopeless
Still a little piece of you dies as you scream
So walk on by, I've got no reason to love you but I do
You're showing me colors of the sky
But all I see grey
You lost me when you lied
Collecting your jar of hearts
Tearing love apart

It breaks my heart