Touring Pemberly

Today, I heard, that Elizabeth toured through Pemberly, but the only reason that she agreed to doing so was because Darcy wasn't home.  She was blown away by the superiority of the place and how nice it was with all of the elegant features that house had.  However, when Darcy all of a sudden showed up, Elizabeth had a sudden rush of emotion.  She could barley even control herself.  At the end of the trip, he told Elizabeth that he would be having guests over later and that is why he really returned, but I keep asking myself, was it really because of that or was it because he heard that Lizzy was there?