he might be thinking of things like your not knowing what his favourite colour is or when his birthday is. where his favourite restaraunt is, what his hobbies and pet peeves are. whether he likes the cap on the toothpaste or whether he leaves the toilet seat down or whatever.

IMHO... those things... don't really define a person, however.

he might be thinking that you idealise him (by overgeneralising). he might be thinking that you think he listens to his wife and his kids and his boss and everyone on the streets the way he listens to you. he might be thinking that you think he doesn't really have needs / desires / much in the way of feelings / thoughts of his own... instead he is just whatever you want him to be... he might be thinking that you think he never has bad days. that he never gets %#@&#! off with the world or depressed with life. he might be thinking that you think he has it together all the time and that he can perfectly do all the things he is trying to get you to do...

that being said:

'if i had vision who would i see?
maybe its you and maybe its me...'

aspects of the relationship are very very real indeed. if therapists think we can learn nothing of their character / personality from our interaction with them... well... denial or self-delusion methinks ;-)