Love anything and your heart will be wrung and possibly broken. If you want to make sure of keeping it intact you must give it to no one, not even an animal. Wrap it carefully round with hobbies and little luxuries; avoid all entanglements. Lock it up safe in the casket or coffin of your selfishness. But in that casket–safe, dark, motionless, airless--it will change. It will not be broken; it will become unbreakable, impenetrable, irredeemable. To love is to be vulnerable.

C. S. Lewis

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EDIT: I saw this one on gossip girl and I can’t find the song. ~everytime you walk away or run away you take a piece of me with you there… come back to me. you smile and make my life complete.