Well when Pan was going to cast the curse, didn’t Rump say that the curse would be different to suit Pans desires.
Rumple says that the curse Pan in enacting will be per Pan’s desires but it will still operate the same–memory loss, frozen time. Zelena seems to have gotten around that. So either it’s the same fundamental curse but tweeked somehow (blood vs heart for example) it’s a totally different curse.
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"He was a lot of things to me" "The only conclusion was love"