I am 16. My girlfriend is 14. There will be a short time where we are 15 and 18. Is this illegal?

I live in Ohio btw. Obviously sixteen and eighteen is legal. Me and my girlfriend have been together for five months, and it never dawned on us until two days ago that there will be a two-month period of time that I will be 18 and she will be 15. Will we get in any trouble?

I don't wanna hear "nooo that's fucked up and wrong" we love eachother with all of our hearts, and I'm not gonna break up with her over this. Our parents are both okay with it and don't see it as a problem. And the two of us definitely don't. But is there going to be legal consequences?