When I met my girlfriend she had never been on a motorcycle, she fell in love with it and from day 1 was a perfect passenger, as others stated the only way I could tell she was there was by a slightly slower acceleration. I don't think she was ever on my zx6 because I took the pegs off right away. After a year of being on the back she got her license and her own bike. It is nice to ride together but I liked having a passenger too. Being on the back of my dads bike as a kid is some of my fondest childhood memories and I try to share that experience with my nieces and nephews too, obviously with gear on.