Are you a former introvert who has "come out of your shell"? If so, what caused you to change?

Or, would you still consider yourself to be an introverted person? Are you an extrovert? Or maybe, somewhere in between the two? Are you better one on one when dealing with people? Okay with a group of people, or no? Or, do you suck at it? Okay with co-workers, but, find it tough being social outside of work? Are you okay with your friends, but, when it comes to dating and the opposite sex (or same sex, whatever your persuasion), are you a bit shy at first?