All I can say is, when I was raising my children, I told them they were NOT allowed to date at all, till 18 years old. I told them it was normal for them to like someone, but just keep it to themselves, meaning don't let the person you were attracted to know. I was firm about that!. My girls were very attractive when they were that age, but to my surprise they did not date, they honored me that way. I had fun with my children, and they knew I loved them, maybe that is why they honored my rule. Today I see parents allowing their children all sorts of privileges with the opposite sex, and what can they expect down the road.
Parents have to pick their battles these days, if you pick, pick, pick at your children they will, when they are teens rebel, but if you allow them to express themselves in their rooms, with decor, encourage them to get involved with a hobby, let them make a mess, and laugh with them. Then when you come down on them with a particular, serious matter they will hear you and listen.