My ex's step father was 15 years younger than her mother. And looked it. People just assumed he was her son, not her husband. So beware!
I met my wife when I was 30 she was 22. Married over 30 years but when I was disabled she went looking for greener pastures, so I really don't think it's a good idea but maybe I'm reading too much into it.
I expect she would have done the same if she was older than you, too. Sadly...
I generally gravitate towards older men, 10-15+ years older. I’m 44 but think I’ve always been, I don’t want to say more mature, but just an “older” person. I have a really hard time considering dating someone younger though. Anything more than about 4 years makes me squeamish.