My DH is 11 years younger than me. We've been together 7 years.
Neither of us was seeking a relationship when we met. He wasn't looking for an older woman, i wasn't looking for a younger man. Neither of us were looking for anything. We fell in love and it's just the age we happen to be.
I wish he wasn't younger than me, out of pure jealousy, and because it's a bit of a joke in the media at the moment - 'cougars' etc. can make me feel a bit stabby.
You wouldn't guess the age gap to look at us. He looks older than he is, i look younger.
Most of the time it doesn't matter to me at all. Occasionally i get in a cold sweat about it when i think about him being 49 and me being 60 when i start thinking about the future.
Our references to life in general aren't dis-similar. TV he watched as a child is much the same as TV i watched. Things he remembers from when he was at primary school i remember from a teenagers point of view. The 80s/90s music scene is so well known that our music references are similar too. He moans about feeling old when 20 somethings join his workplace. He recons policemen seem younger these days. It makes me laugh. I think to myself - i started saying all that 10 years ago.
To some 11 years doesn't seem that much i expect. There are much bigger gaps in successful relationships out there. I never make a big deal of it. I don't show any insecurity even if i feel it sometimes. I don't fuss about birthdays, and how old i'll be, etc etc. I think myself young. I keep myself fit. Having teenagers in the house plus a younger husband just keeps you young at heart i guess.
My mum was old by the time she was 40. That's not for me.
The biggest divide between us is that i have kids of my own, and he hasn't. He's a great step dad to them, but hasn't known them from babyhood, and can't grasp just how quickly time flies as a parent, and how, to me, just how recently if feels that they were babies. He's realising this now, however, seeing his nephew go from birth to school age in the blink of an eye.
Big ramble that, sorry
My point is OP, its only an issue if you make it one. Enjoy each other, as you would any new relationship, and what will be will be.