Both Em and Ami have called me this on occasion, and it is part of my personality profile as an ESTJ (Extroverted Sensing Thinking Judging).
gre.gar.i.ous : Seeking and enjoying the company of others; sociable.
From Latin for, belonging to a flock.
Ok, so not as beautiful and flattering as I thought, but definitely true!!
If your curious about Jung-Myers-Briggs typology and your own four letter code, try this test.