Okay, I’m sorry but this is officially my new headcanon
We have spoken about Killians face but look at Emma. Yes she is surprised to see this man dressed as a pirate at her front door but it is the look of surprise that she knows this face. She recognizes him. Almost in shock to see Killian.
Emma probably dreamt of his face. To her it was her imagination creating an image of man that didn’t exist. Now there he was standing in front of her. Saying her name. It took her by surprise that he could actually be real.
This could explain why when Killian kisses Emma she leans and closes her eyes for a brief moment. There is a part of her that knows him.
That same part the reminds her of who Killian is may also be the same part that reminds her that she like cinnamon on her hot chocolate and wear Grahams shoelace everyday. They are just important moments in her life that are ingrained in who she is and no memory loss can take it away.
Wow!! Yes, totally!!
(Of course *ahem* my jaw would probably drop and I would also probably lose my breath if I opened my front door and saw Colin O’Donoghue standing there, even if I didn’t recognize him).