Roses, I'm not a "sexpert," but I did read somewhere that men think about sex every few minutes. Obviously, however, most of them just THINK, not yak about it. Some questions: 1) Has he always been this way, at least from the minute you met him?; 2) Has he ever had any trouble with impotence?; 3) Might he be taking Viagra or some other such drug?; 4) Do you think he might find some other way of getting his sexual obsessions out--maybe journaling, writing down his fantasies, etc.---and you can tell him that you will read what he writes each day, but you don't want to hear about it ad nauseum when you're stuck in the car with him or wherever?; 5) Is he worried that since he is getting older, he might not be able to perform at some point--so he wants to do it as much as he can while he can and in all sorts of interesting places?; 6) What else has he said about his former wife and her lack of interest in sex? Can he be blaming himself in part? Did she disparage his sexual performance?; 7) Does he look at porno?; 8) Has he had a physical exam lately to check on hormone levels and any other physical issues that could explain the "hypersexuality"?; 9) Would it help to tell him you just want to do something else or hear about something else right now, but you two can plan a "hot night" or an unusual place and put it on the calendar?; 10) Would he be willing to settle for mutual masturbation or oral sex or a hand job in the interim? (sorry for the bluntness )

Meanwhile, I would suggest that you talk to a therapist about the issue some more, if it continues to be a problem. I sense that he DOES NOT want to think there's something wrong with him, especially if his ex suggested it.....

Again, remember that I'm not an expert--just thinking off the top of my head, hoping to be helpful.....