This may be way off base and maybe even out of line, but I would take his tv out of his room for awhile. Not as a punishment, but so that he has to spend more time with you. Maybe you could open dialogue and chat about his day. This could lead to building a new kind of relationship that would let you talk about the bigger things in a comfortable way. When kids that young have that much solitude, they can stew and make things even bigger in their minds than they have to be. Let him know that it isn't a punishment or for anything that he has done, but that you want to spend more time with him....sharing your evenings and free time together. You could maybe add some game time or other activities that you both would enjoy...together. Hope it gets better for you soon.