Advice from the old lady:
I agree with
@Atom Smasher about conditioning her out of this. I like the “what’s so interesting over there” approach.
How old was she when you met her? How old when you married?
One of my sisters (who was a Division 1 NCAA cheerleader at a major university for 4 years *hot by any standard*) married her college sweetheart, and 2nd man she ever knew sexually...we used to go running together frequently. She would admire nice looking men here and there and used to say:
“Married...not blind...”
She has character and has been loyal to her husband now for almost 25 years. But this idea that you never appreciate a specimen of the opposite sex EVER is silly. Look at the Sports Illustrated Swimsuit edition each year.
Another brother-in-law of mine openly admires the occasional Victoria’s Secret model. Big deal. My sister isn’t worried about it at all.
Loyalty is a choice. Sexual commitment and monogamy is a choice. If the OP’s wife is choosing commitment to him and monogamy to him that’s the biggest thing.
If her noticing others bugs you, train her out of it as noted. Apply some silence & distance but explain why if asked. You don’t want to appear insecure.
My guy admires other women at times. He’ll say, “Wow that’s a gorgeous woman...” and he’s typically objectively correct. I simply agree and drive on. He’s with me after all so why should I be worried...
It’s kind of like appreciating a beautiful car even if you love what you drive.
I think divorcing over this is an over reaction. Just my two cents.
See if you can train her out of it first. The first year of marriage is an adjustment, especially for the very young & inexperienced.