Like i said before is not my theory, and i dont believe it. But in Hook case i think will come out since is now part of the story to cause Hook and Emma drama and more trouble to Rumple, since i believe this will extend until end of this season, so with Hook i believe was not a continuity error, or some problem acording to plot. Also all the other characters were just 11 epis or recurring characters. Even on henry case no one mentioned anyting bc was just a story for 11 epis.
Oh everything will come out before long but I honestly think Hook’s heart is just inconsistent writing.
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"He was a lot of things to me" "The only conclusion was love"