Its not illegal to date, but you cannot legally consent to any sexual contact until you are 16.

Is it okay for a 14 year old to date a 17 year old?

Sexual activity with a person who is underaged, by anyone, including another person under 18, is illegal. After you turn 18, it is still illegal. Dating is not illegal, as long as no sexual activity is involved, but as long as she is a minor, her