Hankster (and this is kind of a moot point as GeorgiaGirl has already explained more) I would argue that yes everyone would have a personal reaction in a professional environment when you know the person you're dealing with, but that can be okay and doesn't mean boundaries are threatened? So, in effect I see where it becomes the dual relationship, but not that the boundary line is automatically compromised by there being a dual relationship.

I don't know, I'm muddling myself the more I think of this!