What is something you gained interest in through your partner?

Example: my boyfriend is a writer and I started learning about the history of linguistics from him. Lately I've been going on research sprees to discover cool things about translations and older versions of current languages (like how linguists figured out how to speak Ancient Egyptian.)

So what did you discover you really really like that you wouldn't have known if not for your partner?
What is something you gained interest in through your partner?
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