Been married 15 years, just over 40. My PNSO didn't even get to the actual nuptials, started during engagement. It's been a constant source of stress in our relationship. The whole thing never made sense to me . . . she literally would rather fight about not having sex than just doing it, pretty stupid. Either way, I started training for Ironman triathlons and it's had the unexpected benefit of crushing my libido so that now we mostly match and get around to it once every other month or so. As long as I can keep my unhealthy obsession with this 'sport' we should be good.