I recently came across an article on Yahoo.com by Laura Tedesco dated September 15, 2014. In it she relates the findings of a study by Deborah Carr, Vicki A. Freedman, Jennifer C. Cornman and Norbert Schwartz that looks at this issue. The study was named Happy Marriage, Happy Life? Marital Quality and Subjective Well-being in Later Life.
Listen to Deborah Carr describe the wife who is unhappy with her husband.
So, what is happening? In Laura Tedesco's article she interviewed one of the authors of the study, Deborah Carr who said
if a wife is happy in her marriage, she will try hard to create a positive experience for her husband...So perhaps she listens to him more, she offers him more emotional support, or maybe she offers him more help with daily activities
She is much more likely to talk, to be confrontational, and all of those things might affect the husband