What's a heart break?

it's seeing you, seeing me knowing I am the woman who tore a good man apart it's knowing you, knowing me knowing I can be better cause you deserve so much better it's thinking, your thinking that you may be thinking that you wish you'd never met me it's feeling, you feeling the pain in your eyes, the pain in your heart and soul, the pain on your face, the pain you hold cause I chose wrong it's never knowing , you never knowing how I wish I wouldn't had taken you for granted