First of all neither you nor he are children (grounding him? taking his computer away? seriously? are you his mother or his wife??? and crying? ultimatums? BIG no-no's) no wonder nothing you've tried has worked you are not acting like an adult in a partnership you either act like a child or his mother.

At this point you may just have to accept him for who he is unless you are prepared to walk out after only 3 months of marriage. (in which case is quite sad and shows you never should have gotten married in the first place since you can't seem to handle it) Some people are just messy people and if you don't like it just pick up your own messes and keep where you go to most clean. He's his own person and your the one that chose to marry him when you knew he was like this before counseling (ONLY a month???) you've gotta do what you gotta do. Leave or accept it.