The Humanity of Broken Hearts

In the wake of the suffering post a couple weeks back, Confused, Maybe Not and I considered a proposition I want to throw out here. Is it an essential part of being a human to have had your heart broken? Is it an experience everyone should have? Does it teach you something about being human that you can't learn in other ways? Is someone who lives his or her whole life in bliss with the object of his or her first love missing something?