Have him see a doctor. There is medication that he can take profilactically (preventive) for herpes that he would take daily and would prevent these outbreaks. I think the name is Famvir or acyclavir or something like that. How is the marriage besides the sex?
You have 2 choices you can try to wotk things out or you can leave the choice is your, why have you put up with this 8 years you knew the sex was dissapearing luck jo
You were aware of his STD prior to getting married right? You dealt with it for 8 years now, why all of a sudden the change? All you can do is try to be patient. I suggest you try again to talk to him about your concerns but not while you are angry at each other.