No it's against the law in most States. Most guys that go for a young girl lack self confidence and are controllers. They know that if they dated someone their own age they wouldn't be able to con that woman in most cases and he'd actually have to work at the relationship. NEW ANSWER.
You'll only get in trouble if you parents don't approve and decide to press charges on the said 25 year old.
It doesn't matter how old you are as long as you know who you're dealing with and you love each other it's just fine.
Romances with great gaps in age have been going on since the begining of time.