What happens in another 30 years when she's, not only overweight, but OLD? Wrinkles come! Hair turns wiry, gray, white, and then yellow. Many women get chin hair and have moustaches most 15 year old boys would envy. That child fat wasn't merely fat. Her body changed. She has saddle bags, because her pelvis got pushed out sideways to let the baby out. Her skin inflated like a balloon, and no matter what you do, most women can't get that skin to look like anything less than a deflated balloon when the baby is born. Some (most) have pouches. The only way to fix that is plastic surgery, and that's only a temporary fix, because (and this is so going to burst your bubble), when you get old gravity hits.
The hair on your head will lower into your ears, nose and back. Her gravity will sink her perkies, and make her bubble bottom look more like an old bag ofd Jiffy popcorn that someone hung up instead of ate.
Wait until she hits menopause. Your lovely partner will turn into a raging volcano on the inside and a lava flow on the outside. I could have heated most of Philadelphia at bedtime, the night sweats were so bad.
So, really? You stayed in shape? Or are you like most guys I've known who swore they kept in shape? (It's really not a 34 inch waist, simply because your belt buckle is even with the bottom of the zipper. lol)
Think of her position. She married a guy who said he'd love her for better or for worse, and is already complaining before the worse has even hit!!!
I'll give you an insider's-trading tip. You know what got me to lose weight finally? A husband who loved me whether I was fat or thin! Once I'm not weighed down by his superficial demands (and I never was, which I am so thankful for every day), I was free to do what I wanted superficially. I weighed 234 at my heaviest. I lost ten of those pounds simply by giving up sugar for lunch and breakfast. (I so love honeybuns -- literally, not a figure of speech. lol) I came down with diabetes last year. (Duh now. lol) I then had to give up all sugar. Hubby has had diabetes much longer, (and he's never been big on sweets.) Instead of doing what you're doing, when I asked him what I needed to do, he gave me the basics. I lost another ten pounds. Only then did I decide I want to lose the rest. Not for him, but, of course partly for him. Mostly for me, just to see if it helps my back any. I've just reached a spot I haven't seen since the last century -- 199. (Okay, I've lost two pounds since then, but that 199 was so exciting!) I don't even know how much more I need to lose because that getting old thingy already started. Gravity is kicking in. I'm 1.25 inches shorter than I used to be. I know I used to be between 155-170 pounds, but I also used to be 5'11". Oops.
It works so much easier without someone nagging me.
And know what would help your wife -- you remembering to love her no matter what. I know we all say, "Let's never change," but come on now! You've been married for 20 years. When are you going to catch on we change anyway?