Jack's POV. Why Jack made Will stab the heart, why did he save him. Reason: Jack cares too much about him and, Elizabeth too.
The vid explains itself, so just go and watch it don't read my bad summaries :D
Clips from PotC 1, 2 & 3. And EVERYTHING BELONGS TO DISNEY, i own nothing. (just the editing.)
"The Scientist" by Coldplay.
