It's an expression from my language that I translated for your convenience Actually, no. I have plenty of metalhead friends that are with someone who doesn't like metal at all. Usually they get partner-whipped into dressing like everyone else out there and only listening to their music in secret, but that says more about their individual personalities than about metalheads in general. Anyway, it's a rather common occurrence, but then again, we Europeans aren't as insular in our subcultures as I understand Americans are. Well, you're definitely lucky in that respect. I know I am.