discovering someone else has your fetish?

So, I was talking to an old work friend from back in the summer. And, I got a little cheeky, started talking about gunge. She then had the idea that we should have a gunge fight some time. Though i know it's nothing solid, but something about the way she latched onto the idea made me wonder if perhaps she has a thing for getting messy, too. However, she was flirting with me, so that might be part of it...
But, my question is, has anyone ever innocently stumbled across a person's fetish where they're perhaps not aware of it? (or atleast haven't fully realised it)
She also seemed to have a thing for rubber... "Dear Penthouse forum..."
But, my question is, has anyone ever innocently stumbled across a person's fetish where they're perhaps not aware of it? (or atleast haven't fully realised it)
She also seemed to have a thing for rubber... "Dear Penthouse forum..."
