It's like I always say, there are different levels of being a fan. Myself, I consider myself a "huge" or "hardcore obsessed" fan because I own all their music, I know a shit-ton about them, I listen to them everyday... I have them tattooed on my arm, and so on... but that doesn't mean that you have to be that into them to be considered a fan, that's just my choice. My spouse is a fan but he doesn't love them like I do. He still listens to them with me and goes to see Paul in concert, etc.
I do know ...