I hope you will read . . . and RE-read . . . and re-RE-read -- that post from TimeHeals. Because not only is it GREAT advice, but I suspect that your one paragraph that he picked out -- and his advice about it -- may hold the "KEY" to your sitch.
It's what I was hinting at in my "co-dependent" observation. There's something emotionally unhealthy about your attitude toward your wife and your marriage. That's not a criticism; just a very important observation.