You know you're a nerd when you connect more with your Pokemon, Digimon, monsters in Monster Rancher, squad mates in Mass Effect and Dragon Age, teammates in Persona 3, characters in any Final Fantasy game, and your weapons in Dark Cloud 1 and 2 than you do with almost any person.
...it's depressing to say that's true for me, but I have a combination of social anxiety and claustrophobia so I can't really interact with people especially in large groups. I'm the person you'd see sitting in the corner alone in class/at lunch or at parties...