What does it mean when your female friend likes the same things you like?

I have always been obsessed with mushrooms i can be weird and like weird things but since i was 13 i always been obsessed with mushrooms how they look anyways i share mushrooms pictures a lot on my Facebook and she has never mention anything about mushrooms and recently we went to a store and seen a bucket hat with mushrooms and she want it to buy it.
What does it mean when your female friend likes the same things you like?
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