On the eve of her 87th birthday, Ruth Westheimer is still talking about sex.In her new memoir — her second — called “The Doctor Is In,” Westheimer shares a bit about her own romantic entanglements. Her first boyfriend was nicknamed Putz, she tells us, and she lost her virginity on a kibbutz (not to Putz). As a young patient at a hospital in then-Palestine, Westheimer dishes, she had a “brief but intense love affair” with a male nurse.A few other details you might not know about Dr.