What is your significant others cutest quirk?

Me and my bestie were falling about our significant others quirks. My fiancé's is Pokémon. He is definitely the more masculine type. Weight lifting. Sports. Stuff like that, but if there's anything that can bring him back to his 13 year old self its Pokémon! He has 3 entire binder full of Pokémon cards and he loves Pokémon go and our bed is covered in Pokémon plushies lol. What is your significant others weirdest quirks