I was in a long term relationship/ marriage for many years with a woman 15 years older than me. If I were to go younger at some point in the future for an actual relationship, no more than 10 years. It's really not fair to the younger person in the couple.
But, just for casual dating and sex, I wouldn't put an age limit as long as it's legal.

It really depends on the partner and their commitment to the relationship. Because generally, things do not get better with age. The things you used to could do when u were younger, you can no longer do or keep up. As long as the younger partner understands and accepts that going in, age shouldn't really be a problem.

I have dated a few women that were younger than me over the years. Never more than 10 years difference younger, there were a few older women, one 30 years my senior. I know someone near my own age will have similar experiences so i try to stick close to my own age but I don't really think it makes a difference if the connection is there.

My ex husband is 7 years younger than me.
I didn't usually get involved with men younger than me either but he was mature for his age.

My only two proper relationships have both been with women 7 years younger than me. And I've now been single for 7 years.

My 'limit' with age gap would be 10 yrs younger and maybe 5 yrs older.

I haven't. I've been with someone older than me, though. 🤔 That was when I was in my early 20s.

My ex was a year younger and my new bf is 5 years younger. Other than that no.

For a brief time when I was 54 I dated a 35 year old. We got along great, but I was about to retire, so we were definitely at different points in our lives.

I've had relationships with women approximately both 15 years younger and 15 years older. I wouldn't refer to either as a partner - flings for all concerned, I think

I had a boyfriend 2 years younger than me, but it didn't last more than a few weeks.
I think we were 18 and 20 at the time.

The love of my life was 12 years younger than me. My last girlfriend was half my age. She was 36 and I was 72.

I don’t like being with people younger than me. Doesn’t feel right but that’s just me.

Nope

I have, and my wife enjoyed the company of younger men.

i think she was 3 years younger. dont really remember anything about her. 🙄

Nope

The biggest age difference was about 30 years younger than me.

Yes I have 5 years younger than myself

How old was this person? You're very young yourself.

I was 32 and she was 22 when we first got together

You are young! lol

Relationship......... if we're talking several years plus then the word "relationship" doesn't count, unless a month or two does?

age is just a number

Youngest was 9 years and three months younger than me, I was 44 she was 35 when we hokked up.