Depends what you mean by 'date'. A boy and girl in early teens can go out together, but sex is a no-no until the age of consent, 16 years in the UK, higher in some parts of the USA. I think that you...
If you like a girl/boy then talk to your parents first before you do anything. Usually, you start to have a crush at 10 but don't tell your parents until about 14. Often, children usually hide that...