Rumple also said that he didn’t “give a d****” when everyone else was freaking out over Greg in “In The Name of the Brother.” He had lost Belle and he didn’t much care about anything else except finding his son. And to everyone else, Greg was harmless. They didn’t realize what he was doing.
The BF explanation is simple: Deus Ex Machina.
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"He was a lot of things to me" "The only conclusion was love"