The same thing happened to me at about the same age as your husband, and I can offer some advice on what to do. First of all ,do not pressure him or in any way make him feel humiliated: believe me he is suffering enough from this problem as it is. It is common in men as they age,but it can be dealt with and overcome. I avoided sex with my wife for nearly ten years because I was afraid I would fail to perform. Fortunately viagra and the other enhancers came along about then, and they can help, but even they will not totally solve the problem. Agree with him that when you have your intimate times that it is okay to not go all the way every time. Concentrate on caressing and touching, and if it leads further, then go with it. It is important for him to feel the need for sex and not be made to be intimate if he is tired or not in the mood. If he wants to stop with touch and kisses, then reasssure him that's okay, too. It will take time, but impotence due to aging can be overcome. Also, it is important that he not be accessing porn or masturbating much, as both of these acerbate the problem. I found if I would concentrate on making my wife happy and not on myself and my problem, things went much better. I now have a tremendous and very fulfillling sex life with my wife. You two can too.