When I was a kid my parents constantly complained and hated their coworkers, so I thought inter-work friendships were stupid, and the only reason people would care about their coworkers is if they were madly in love. And even then it was tragic enemies to lovers.
So when watching the Harry Potter movies and seeing how all the professors got along well with each other, I fully believed every one of them were together.
i didn't even ask my parents because it seemed so obvious. And when I found out Snape loved Lily (way after it should've been clear to me) and Dumbledore loved however-you-spell-it tall-man (also way after I should've known, but this time I asked my mom if it was a date, because I'd thought they were brothers), you can imagine I was VERY CONFUSED.
Anyway the HP world is both more and less queer than I'd originally assumed.