I absolutely loved Passion! It was amazing to get to see Luce's past lives, and to see their love over time...it was so intricate, and Lauren Kate did a splendid job filling each life with so many details! It was also incredibly fascinating to see Luce exist in different time periods and vastly different places, and seeing Daniel's chosen life in each lifetime was also really neat. :D 
 I can't wait for Rapture now, I definitely haven't gotten enough of Luce and Daniel yet. :D