[faramarz]

That's being an Ambivert. You and I both.

  Ambiversion is a term used to describe people who
  fall more or less directly in the middle and exhibit
  tendencies of both groups. An ambivert is normally
  comfortable with groups and enjoys social interaction, but 
  also relishes time alone and away from the crowd.

[rblion]

didn't know there was a term. thanks. now i do.