I think there probably are some men who would get upset by their S/O having more success than themselves. There are probably some women who would feel the same thing. I also don't think those kinds of people are limited only to one person, or even one sex. Many of them would probably feel the same way about ANYONE who seemed to do better than themselves. Think of that guy in the office who stopped talking to you when you got a promotion, or that woman who always seems to be trying to one-up you at meetings. I think some people are just wired to be overly competitive, and don't like coming in second. And some of them will do almost anything to get to the top. Steroids in sports, undermining coworkers, even going so far as to damage a neighbor's property to make their own look better.