If that doesn't work usually it's best to address someone with a question.
There is a good chance of success for the two of you, if your husband accepts responsibility for what he has done and if the two of you are willing to work hard on improving your marriage.
There is a big difference between a person occasionally viewing pornography with the knowledge and even involvement of their partner to a full-blown betrayal and using adult websites to start affairs with other people.
Like many problems, it can start innocently at first, with a person visiting sexually titillating sites perhaps out of boredom or a seeking escapism but then it can escalate to other behaviours, such as directly communicating with other people online and over time can become addictive and harmful.
This should be time you have alone perhaps when the children are in bed and to make sure it is distraction free (with the computer and TV turned off).
In addition, try to have at least one special evening a week when you get a baby-sitter when you can do some new things together. The biggest prize of a successful marriage is closeness and intimacy – which allow a couple to accept and support one another on a deep level.