It’s interesting that Teresa and Dora Mae are leading the poll. A fling with Dora Mae would have been ideal at the start of season 11—a time when Dallas was losing a significant number of viewers, yet remained relevant enough that the sight of JR in bed with a woman of color would have made headlines. I could see Dora Mae being an uncomplicated bed partner, much like Serena or Louella. As for Teresa, it’s hard for me to imagine her letting JR get that close. Perhaps he might have tried to force himself on her in the kitchen while drunk, only for Miss Ellie to walk in. What a conversation that would have been between mother and son!
Since Liz Craig was already having an affair with her boss, Harrison Page, she might as well have had a little fun with JR in her office at the store—while, outside, Pam wonders why the door is locked. JR must have learned how to sexually please a woman from someone—perhaps Mavis Anderson took care of that back when he was a teenager.
Regarding the theory about Cliff: this could have been explored if Cliff had gone to see Dr. Elby for therapy. The psychiatrist might have questioned why Cliff was so intent on sleeping with JR’s women (Sue Ellen, Afton) and suggested that Cliff actually had feelings for JR—a notion Cliff would have vehemently denied, of course.