Seems as RJ knows things so private about PJ that I am wondering if PJ may have been hypnotized at some point and doesn't realize it. The touching of the past memory that he never shared, the fact that PJ had to learn to be a "mentalist" from someone and how that has been an element along the way in the show would answer how he knew the memory and the seven that PJ had come up with.
Suspect - undetermined at this point of the game.
