It's almost certain that this man had just gone to the master bedroom upstairs, taken a shower in the master bathroom, and that's why he was now wearing the slippers she kept by the sofa and had used the perfume she left on the bathroom sink.
As for his attire, he was wearing a robe that Penelope had hung in the master bedroom.
Zoe had already begun to guess who this man was, and her first feeling was a dislike for him.
Penelope's expression also showed a hint of displeasure, but since it was a reunion with a cousin after a long time, and the man probably didn't mean any...