Love me do.
I'm not social in real life. ; But I have one real life best friend. Her name is Audrey. We met at a summer music program when I learned she played the viola. We played our DS games together. Eventually I gave her my phone number and we hung out a couple of times that summer and then we thus became best friends from there. We've been best friends for almost five years now! She's one year younger than me, but who cares? Age doesn't matter.
Online I can't pick a best friend because I don't want to hurt one's feelings if I say that one of them is my best friend. Besides I'm super social online so I talk to a lot of people. xD