It was the summer before my junior year in high school, I was sixteen, and so was my twin sister Kate.  We were about as different as twins could be, except for looking alike. I was a bookish, intellectual nerd.  I like sci-fi, comic books, and school.  I had friends, but I had never had a girlfriend.  I was shy, quiet, introverted, and very reserved. Kate on the other hand was a firecracker!  She was very brash, outspoke...