I think from a writing and marketing stand point, they have to play out the CS stuff to the satisfaction (semi-satisfaction) of the CSers, meaning that Emma and Hook have to be in a relationship for some length of time. A and E will literally never hear the end of it if they don’t let the ship out of the harbor. Same with SF. Which ever comes first (Neal and Emma work things out or Hook and Emma try for a thing) isn’t end game. Or that’s how I see their drama writing gong.
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"He was a lot of things to me" "The only conclusion was love"