Pierre Lehu worked with Dr. Ruth for 40 years. The iconic sex therapist and talk show host dubbed him her “minister of communications” and he says she was the easiest person to market, whether she was promoting one of her many books or hitting the road on a speaking tour. “We’d call the Tonight Show — ‘yeah, we want Dr. Ruth,'” remembers Lehu, who wrote 25 books with Dr. Ruth but had never, until now, been interviewed about one of them. “Who would want to talk to me when they could talk to Dr.