You know I’m hearing a lot of people call this a plot hole why hasn’t anybody done the heart splitting thing before but if you pay attention or look back it all makes sense. Ok first look back at who has been killed with a heart crush of them who gave up their heart willingly, and had someone magical that could or was willing to split a heart and save them in this way?
Off the top of my head Daniel? Was Cora going to spilt Regina’s heart and help save him she was the only one that could at that point? Milah? Was Rumple going to split Hook’s heart in two and try and save her?
Next thing remember what Snow said in that scene, since he woke her up from the sleeping curse they’ve been of one heart. Lastly what happened there? Regina didn’t even know it would work! Snow’s faith gave them reason to try it what they did could have ended up killing both of them! What happened there was both a long shot and something unique for them.
Snow paid the price for the curse Charming’s heart was sacrificed, they can be of one heart because for one thing they’ve been of one heart since the sleeping curse and it was just a shot of blind faith that even let them try it. The price of the curse was paid they just had enough change left over that both of them could live.
Another thing about the hole in their heart Maleficent warned about, here’s the difference. Regina cast curse 1.0 out of vengeance, to take everyone’s happy ending. What happened here in curse 2.0 wasn’t that this was self sacrifice. This was to keep the a happy endings Charming was willing to die to protect his family, Snow thought she was killing the one she loved to save their family. Regina didn’t do that before she sacrificed who she loved for selfish reasons that’s why there was a hole in her heart.
