In Eclipse there are three possible heartbreaks. You can tell this just by looking at the juicy movie poster!
Bella's heart will regardlessly broken no matter her choice. She will miss the other option terribly.
Edward's heart can be broken if Bella chooses Jacob-- even though she does not.
Jacob's heart will be broken when Bella chooses Edward. But its good she picks Edward because if she chose Jake- ah never mind. I was gonna say 'when Renesmee comes..."