Men’s egos may not fare so well when their wives earn more¶At the other end of the spectrum, it may not behoove men to brag about their earning power before marriage. Men who lead a flashy lifestyle are regarded as being more interested in short-term hook-ups or affairs than marriage, according to a 2018 study by Daniel Kruger, a faculty associate at the University of Michigan and Jessica Kruger, a clinical assistant professor at the University at Buffalo in New York, and published in the academic journal Evolutionary Psychological Science.