That's an interesting question. LOVE is eternal. Hearts are broken every minute of everyday. I couldn't count (honestly) how many times my heart has been broken in my life... so far. I sincerely believe once you've gotten over a broken heart, it becomes new again.
Quote from a great song: "Break a heart of stone; Open it up but don't you leave it alone. Cuz that's all I got to give to you. Believe me babe it ain't been used; My heart's a virgin, it ain't never been tried and you know I never cry."---Alice Cooper
Just like music, broken hearts are timeless. But so is love.