You poor, poor dear! Things are really tough right now for me, (my post: Beyond Frustrated) but I can't imagine going through what you're going through!
After reading your post, I reflected back on the cell phone"emotional affair" my husband had a few months back. My eventual solution? I shut off our cell phones. Ever consider this and getting rid of your internet? I know it's scary to go without these things now-a-days, but it's really not so bad. Besides, those "pay as you go" plain Jane cell phones will do the job in an emergency. Maybe this could be an option?
Counseling is a wonderful idea, wish my husband would agree to go. As awful as things are for you, keep going--don't give up--we can keep going long after we think we can't. God is bigger than our problems.