What should you do if you found out your husband is going to websites about divorce?

It would probably be a good idea to ask your husband why he is going to these sites. If the answer is that he is looking to divorce you then couples counseling would be a wise next step. If your husband is unwilling to work through the problems then I would oblige him with the divorce and take myself to counseling to help deal with the pain. But keep in mind, if everything seems to be going well, he may be looking at these sites for an entirely explainable reason. Take it upon yourself to go to websites with great divorce lawyers. Ask him if he wants a divorce and then try to talk it over to see if it's possible to salvage the relationship, if that's what you want.