My husband stays up til 5am to websites, I don't know what to do about it or who to speak to

married 10 years, 2 kids, he has always been sneaky about over the years I have discovered, films, magazines, mob phone and websites, I've tried talking to him and done the whole ultimatim thing, but he say's he's just bored!! our life is crap, I do it just to please him, I'm afraid he's pretty useless but I can't bare to tell him, and he would probably say I am to, So often I have tried to fix our marraige, but now I really need some help, although this isn't the sort of thing you share with even your closest mates, he's a great dad and I do love him but its very hard to carry on asthough he's a fab husband when I think of him as a total pervert, I suppose the scariest thing is that its now teen websites that he is now looking at, he is usually very cunning about clearing his history on Google, but must have forgot on this occasion, this has been going on for to long and I just don't know how to deal with it. HELP.