I thought you sounded a bit like me in the OP. :). From the vague amount of pop psychology that I know, the "two different guys" is the hallmark of an introver

I thought you sounded a bit like me in the OP. :). From the vague amount of pop psychology that I know, the "two different guys" is the hallmark of an introverted personality, and totally common. Although I think the amount of difference varies between people. It also reveals the distinction between "introverted" and "shy". We introverted people aren't necessarily shy. It's possible to have a very open, outgoing, public persona. It's just not the same persona that you have when you're by yourself, or perhaps with closest friends. (Take with large grains of salt, as I'm not any kind of psychologist.)