From my own childhood, and from teaching, it's not unusual at all for children to be "asking each other out" at 11 or even much younger.
At 9, we had "boyfriends", "girlfriends"..."fiancees" even but it was all a silly game and not at all serious. The occasional hand-hold and peck on the cheek. "Relationships" would be over within about 3-6 weeks and there would be some silly drama and that would be that.
BUT parents and teachers at the time were very firm and clear that these were not real relationships and discouraged it. They certainly didn't enable dates.
Was I "asked out" at 11-14? Sure. But, thankfully, my parents were very clear about the fact that they didn't want me entering into romantic relationships until I was older. I was told that my answer could only be,
"My parents are strict and I am not allowed to date until I'm 15."
And that was 15, with clear communication and boundaries, having met the boy with the clear implication that sex was not permitted and "dating" could only happen under curfews and supervision. My parents were very open that they would prefer I didn't have sex at all until I was in 6th Form. I thought they were nuts at the time but I understood that they might feel a bit disappointed in me if I went against their wishes. Mixed sleepovers (as I'm straight) were not allowed past junior school. Bed sharing with either sex was not allowed past the toddler/KS1 stage (due to a cousin being SA at a very young age by another child of the same sex).
Did I rage and rebel against all of these rules from my "un-cool" parents? Did I go off the rails and have wild sex with everything in sight and cut off communication with my parents?!
No.
I had the odd kiss or awkward fumble during a poorly supervised party. I had lots of daft irrational crushes that changed from month to month.
I got to watch all the stupid "dating drama", teen pregnancy scares (or actually just teen pregnancy, abortions, dropping out of school to have a kid), sexual trauma when something happened that they didn't want or understand, trips to the the STI clinic or to the MAP, genuine confusion over why two 13/14 year olds couldn't make a "relationship" work and thought...
Thank fuck I'm not allowed to date!
I was asked out by my best friend at 15 towards the end of the school year and that was an awful, traumatic disaster and bad enough to go through at that age. It was the first time I'd been allowed to date and even that was too early. He did try to pressure me into sex. Because he wanted to figure out if he was gay. I wasn't ready and ended up losing my best friend and entire friendship circle in the process.
6 months later I was ready to date a boy I really liked properly but I still wasn't ready for sex and all that entailed until I was coming to the end of Lower 6th.
At 13, I absolutely would have been led into activity I didn't want and, though mature, I wouldn't have had the confidence or impulse control to make sound, safe decisions. I was a people pleaser and a hormonal mess! I needed the maturity, control and self awareness that naturally came with the older teen years. And when I did have sex, it was because I was in love and in a long term committed relationship. By taking young dating off the cards, my parents absolutely did the right thing for me. I'm hugely grateful. And I thrived academically and had a world of hobbies and interests that didn't revolve around dating and boys. It was absolutely the best decision they made for me.
But now, many parents take 11+ children wanting to "date" very seriously and actively enable it and buy into the false reality that very young children are capable of committed romantic relationships. And not only that, but that it's in their best interests and being a good parent to allow and facilitate it.