If dating includes sex (or any form of sexual activity) then the answer is yes - and parental approval is irrelevant. If you are under 16 then you may not lawfully engage in any sexual activity (not just intercourse) with anyone.

Is it legal to date a 20 when your 15?

2 attorney answers No, its not illegal. However, it would be extremely stupid for a 20 year old male to date a 15 year old girl. Thats because she could tell everyone that they had sex, even though they didnt, and all of the sudden the 20 year old males reputation