Re: Really bothered by wifes weight gain.
OP, you guys need to change your eating lifestyles. Lead by example. Suggest to her, "hey why don't we change our eating habits".
A book that I think really does a great job of explaining eating to not only maintain a healthy weight but also for overall health is called 'The Schwarzbein Principle'
I'm a multi Ironman finisher (with respectable times, not just walking the marathon), countless endurance events I've done since my teenage years and yet I follow the Schwarzbein plan. Not for weight but for things like skin health, nail health, etc.
You need to look at what and how much you are eating. Log into Fitday. You can easily fit 30 minutes of exercise into your daily routine. And you don't need to do Ironman races to have success. Even light exercise does wonders to lower your blood sugar and help eliminate metabolic syndrome.
When I was married my ex wife ended up following how I ate and when she did, she lost weight. When she didn't, she gained weight....
Weight is not only huge for attraction, but for health, job prospects, confidence. So much more than just if someone has a little bulge.
And for those with high BMI but able to do fitness events, what is typically the case with most is that the working out is just masking bad eating habits. As soon as they stop working out, boom their weight blows up. Very common.