there are no laws in any state that says anything about who you can date. Your parents have authority to say yes or no.
There ARE laws, if the kids are together against the consent of the parent, AND there is sex involved. HOWEVER.. in most states, there still is an age difference that is involved.. example. a 16 yr old with a 23 yr old would be subject to possible rape issues. An 18 yr old and 17 yr old would not be criminal.. and if the parents consent to them dating, then that is totally legal.
Of course, I have to be the responsible adult and warn you to not play with fire, you know the routine. Getting into something over your head and becoming parents too young is not about legality, but common sense.