Not to mention that even when girls are ready to date, that doesn't mean that guys are. A lot of boys aged 10-15 (and even beyond!) are incredibly immature and are incapable of being in a serious relationship. Example:
10yo girl: Sam's my boyf! We love each other!
10yo boy: *at suggestion that 10yo girl is his girlf) Yeah right, as if! Let's go put worms down her neck.
Fact remains that at age 10, you are a child. You won't be physically or mentally mature enough to cope with a relationship, so there's no point in pretending otherwise. Just enjoy being a child.