LW2 - Your wife sounds like mine. A terrific woman, but impossible to simply have a conversation with. I can't talk to her without her making negative, nagging comments towards me, as well as interrupting me when I speak. She treats me better when I'm cold and unresponsive and pulls away from me, or pushes away, when I try to be affectionate. 

But it's always the man's fault, as I've been taught throughout my life. Always.