To love at all is to be vulnerable.

“C. S. Lewis captured this so beautifully in one of my favorite quotes of all time: To love at all is to be vulnerable. Love anything and your heart will certainly be wrung and possibly be 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.”
― Brené Brown, Rising Strong: The Reckoning. The Rumble. The Revolution.