I think he was mainly interested in showing off that he was dating a younger woman
...or maybe he'd been a bossy man all his life? ;)
I won't judge people no matter what the age difference and I've given up on guessing which relationships will last and which ones won't.
Some 15 years ago I started training at this new facility and became good friends with many couples there. There was this one couple in particular everyone sort of made fun of, or at least had many opinions about. At the time he was 38 or 39, she'd just turned 19. The age difference wasn't the main reason people (yes, me too) sort of picked on them. It was the size difference.
He was an average hight but really "big boned" and fat I'd say, he loved food. I think at the time he weighed around 280 pounds or so. She was this slender, pure-bones looking girl, with a very light complection, and she was his height so tall for a girl. However he had a great sense of humor and people just loved listening to him, including the Tiny-rella ;)
Fast forward to today, most couples from then had split up, gotten divorced, so did I. The "unusual" couple is still together, now married with two absolutely beautiful daughters... They still look funny as a couple when they're walking next to each other, but each time I visit them I feel like I'm in the most harmonious and loving home a person can ever hope for.
So I'd say go for it if it feels right...