Recently when my fiance crossed into the US he stated that he was coming to see his girlfriend. The US border official named me before he gave them my name so apparently some things are shared I guess. Even weirder they shared with the US all my crossing info and the US official was able to read all of it and said that the Canadian IO's are afraid of overstay with me even though I have never stayed more than three months and always stay in the US for longer. Funny since I have been asking IO's what their issue was with me and the US tells my Canadian fiance lol!