This is an idea I stole from another thread. Sorry, A_Desperate_Soul. But thinking of my theft as a compliment to your brilliant theory. 😀
I call that only those who possess true love in their lives (lovers, children) will be able to use the magic of true love. Regina will ironically be the only one left out.
Archie, Ruby (unless you count Granny’s love as true love), Whale and Mother Superior are all singles. Hey, I bet Rumple will consider that a bonus: the BF doesn’t get her magic back (although Astrid might). Will Belle, Emma and Henry be able to tap into the magic? I can imagine dinnertime at Emma’s: she goes into the kitchen to bring out the main course and that serving of broccoli on Henry’s plate suddenly changes into an Apollo bar.