Mr Cumalot you have a nice cock. *damn lack of gold account* thumbnails are so unfair.
going by averages it wouldn't seem out there for you to be one of the bigger if not biggest a girl will get friendly with. the girth is nice, well in my opinion perfect. your cock happens to be an aesthetically pleasing cock. nice proportion, nice color, beautiful head. you also seem to have a sense of humor about big ben there.
you should be proud of your boy. women will lie or stroke you ego, but your woman is experienced and probably over trying to fuck with your head. more prone to spend time/energy fucking you? trust her.
ML