Dear confused wife. He is very much thinking of something. Men hate to admit it or he is thinking of something he can't figger out how to say just right. Try doing the same thing he does. Walk around and let out big sighs and when he ask what's wrong,say,"nothing" and walk away. Pretty soon he will get the hint or if he acts like he don't care what's wrong with you,then he is hiding something very big from you. I hope all goes well and your husband starts thinking again..LOL