You know, before we as husbands go around criticizing our wives for getting dumpy and fat, we should ask ourselves did we let ourselves go too? I was looking at the mirror recently and noticed that I was getting a decent sized gut and even told my SO that her gut looks like mine.
I then realized that she has been getting heavier along with me. If there is no other reason to lose weight, it is to get in shape to attract the looks of other women when out in public. Why do you think our SO's conspire to make us gain weight after marriage, it is so they can stop watching their weight too.
So, get in shape, enjoy your increasing confidence and perhaps your SOs will get in shape in turn too to keep you in line.