I have a friend who was a high-school classmate. When she was 18 she married a man who was 39. They are still together all these decades later. Not the most likely scenario to work out, but it can.
One of my best friends married a 19 year old when he was in his 60s. I never said anything but thought it was a bad idea. He always dated real beauties including a Miss Universe from Venezuela and a Miss New Mexico.
I am really surprised that they are still married maybe 12 years later. No children.
Nothing immoral, first marriage for both but still a very bad idea.
“I have a friend who was a high-school classmate. When she was 18 she married a man who was 39. They are still together all these decades later.”
I remember that same situation from my senior year of high school. The girl involved seemed a good deal more mature than most high school seniors.