As you learn to let the fake smile go, you are learning to let all of your masks go, the ones you wear for others and the ones you wear for yourself.
It is time to build us up with real emotions, to see the truth of the human soul. So fold away your fake smile, thank it for its service and send it out for the goodwill collection.
You have to let the fake smiles fade out before the real ones can fade in.
A real smile or neutral lips are both good; fake smiles simply say you are scared or uncomfortable. So let your face do what it does naturally, in the moment, and you'll always be beautiful to me.
Loving bonds are made from realness, so I'd rather see a real scowl than a fake smile. Let your true emotions show and in time your scowl to smile ratio will move in favour of the latter.