The heart was made to be broken.

"The heart was made to be broken." -Oscar Wilde

...to break your own heart.

"You are not a terrible person for wanting to beak up with someone you love. You don't need a reason to leave. Wanting to leave is enough. Leaving doesn't mean you're incapable of real love or that you'll never love anyone else again. It doesn't mean you're morally bankrupt or psychologically demented or a nymphomaniac. It means you wish to change the terms of one particular relationship. That's all. Be brave enough to break your own heart." -Sugar; Dear Sugar, The Rumpus Advice Column