Dating is not illegal. Sexual relations can be. If you are not 4 years older it is not statutory rape. But there is coercion that could be alleged now or later if she gets upset.

Whats the oldest a 14 year old can date?

Close in age exceptions A 14 or 15 year old can consent to sexual activity as long as the partner is less than five years older and there is no relationship of trust, authority or dependency or any other exploitation of the young person.