It was my junior year of college.  It was a Saturday night and I was at a party at a friend of mine's apartment.  The crazy part of the party was over and everyone had mellowed out and we were all sitting in the living room, drinking, smoking and chatting.  I had been delighted to see that a girl from another school with whom I had become friends was at the party, and she and I wound up spending most of the evening togeth...