6. He’s usually blunt and unfriendly, but I saw him smile like a child in a candy store.
This one probably works by triggering her maternal instinct. As you hardly ever show your smile, when she finally sees you laughing wholeheartedly at something seemingly simple, she finds you irresistibly adorable. If you don’t want to go quite that far in order to look “adorable”, consider at least, that it will help to change her perception of you by 180 degrees.