Pamela and Bobby's relationship changed significantly as the show went on and began to progress. In order to create conflict, the producers brought in actors Priscilla Presley (Jenna Wade) and John Beck (Mark Graison) to cause drama for the couple. Eventually, the two characters divorced one another and went their separate ways. After becoming involved with Ewing Oil, Bobby tended to put Pam on the backburner with the company coming first. In an interview with "People", Principal said: "I wouldn't put up with the way Pam is treated by Bobby." She also added, "Our marriage just doesn't work anymore and I want a divorce." With the impending couple doomed, Pamela began a newfound relationship with Mark Graison (played by John Beck). The producers of "Dallas" were faced with the obstacle of getting the audience to root for a new love interest in Pam's life. When asked about the reception of his characters relationship with Pamela, Beck commented: "It was always set up that way from the beginning, so it was quite a task and of course they came back together in the long run. I was just hoping for the best. I never got an extraordinary reaction from the public but it was everywhere, so constant recognition. It was pretty amazing but I never saw it the way he sees it but I can see his point of view. I never really looked at it like that."