I like that thought MUCH better than the whole kissing thing (it’s cute and all, but hey, that’d be way too easy). There’s a similar post somewhere, probably in ep 7 or one of the wolf discussions.
I really like the heart theory. Especially since I also remembered him saying “I don’t fell anything” and it’s just so weird, that he should remember anything while kissing Emma …
And I aso agree that in time Kathryn would have found some happiness with Frederick, though maybe not remembering.